۱۳۹۱ اسفند ۵, شنبه

Khayyam


Poet Mathematician

Mohsen Hashtroudi

Khayyam resembling anyone opened his eyes one day to the world and other day he concealed countenance in veil of tomb. Annalist has recorded the date of his birth and death and possibly occurrences and vicissitudes of time has confiscated him in book of remembrances.
From purposes of what is our discussed, knowing these points are not so significant. Khayyam's prosperity and failures, his all joys and griefs, mirth and sorrow proceeded with him to the transient world. From him, a name, a number of quatrains and some scholarly works in mathematics and natural sciences have been left. If the criteria of people's esteems and worth are their renown, in this regard too, Khayyam is progenitor of scholar dynasty and pioneer of celebrities' convoy. Since by translation of his quatrains to almost all of languages in the world, after Fitzgerald1 work, his name is colloquialism of people of all classes.
Khayyam's renown as a poet was so that Khayyam as mathematician and scientist is eclipsed by Khayyam as poet and in this regard, by permission of honorable reader, some words would be propounded about Khayyam's quatrains, philosophical thoughts and artistic paradigms so that his literary worth is also mentioned. Though utterance of such duty is so arduous.
Khayyam does not see optimistically this passing transient world at all. He knows end of anything as no return and unrelenting. He wishes, from behind of thousand years “like verdure of hoping, you would grow” and anxious eye would open a way again to the world.
He knows the extensive arena of the world as a field of the living's vain effort and search. In hallucination world he sees paradox that have given hand to hand affectionately and friendly and in brick of crenation of veranda, Caesar's cranium on the bone knee of Anoushirvan has relied and quieted down.
Wine is the mystery of the universe and since it makes us unaware of us ourselves, it would give any predicate, regardless of us and so it is the greatest reality. From transient instants of life, every instant that passes away with negligence, for him is venerable and preferential. No doubt, negligence that he purposes, is to take no negligence of the end, namely, negligence of death. The garden that Khayyam sees, is sepulcher of deceased darling ones. Narcissus eyes of friend, violet hair of mistress and cedar stature of beloved have been missed.
Workroom of potter is warning scenery of deep-minded sage and he sees father's ash that is a gimcrack in potter's hands.
I saw if any unaware did not see
Ash of my father in hand of any potter

Conundrum of the universe and mystery of living is not conquerable and anyone in turning of chalice by cupbearer in turn of oneself own, gets intoxicated and unaware out of the ring.
Friends take seats in nocturnal agora but this night is not followed by a day and in turn, they evacuate their seats. Whatever it is also acquired much more erudition and insight, eventually should pass unaware away.
Those who went in pursuit of knowledge
Soared up so high, stretched the edge
Were still encaged by the same dark hedge
Brought us some tales ere life to death pledge.”

He sees workroom of existence without no purpose and anything as a gimcrack of this workroom.
Potter of workroom makes any pitcher though subtle and handsome, with the intention of its return he makes and furbishes it.
Goblet was made by the Wise Lord
“With love & care to the heights soared
This potter who shaped with such accord
To make and break the same clay, can also afford.”

He is consternation passing of time and the caravan of life is wandering about deviated paths. In such position, he supposes worrying about tomorrow injudiciously and recommends enjoying transient moment.

The caravan of life shall always pass
Beware that is fresh as sweet young grass
Let’s not worry about what tomorrow will amass
Fill my goblet again, this night will pass, alas.”

The triple principles of Khayyam's thoughts is abstracted in “transience and shortness of life”, “to make the most of transient life” and “to be free of thought and to conquer mystery of the universe” and this last point is so significant, since it is mentioned to the same point in studying his scientific works and revising his thoughts.
The choice of quatrain form to state thought by Khayyam is a fundamental point. Since transient and short thought in a short form is stated more truthfully and sincerely. Furthermore, quatrain (couplet) in the frame of its own structure is not anomalous to the form of a logic theorem as indeed the philosopher sage sets forth circumstance of deduction of a verdict from other verdicts, Khayyam's literary arts is abstracted in this concise and its comment and explanation requires more time and more leisure, by permission of honorable readers, we leave artist Khayyam in this position.

Erudite Khayyam

To introduce erudite Khayyam, we require some preliminary. At the first we should investigate and study the progress of mathematics and its coordination with other sciences in Khayyam's era and then we would view what Khayyam has fulfilled. Here is necessary to be mentioned that there exists an age in the history of sciences that is well known as Islamic age but it has not been researched sufficiently and in particular in Iran if we relinquish a few people who have proceeded for indigenous verve and interest in rehabilitating and improving the history of erudite in this country, an important work has not been fulfilled. (Meanwhile it could be called Mr. Dr. Mostafavi and his “the world of science” magazine, Mr. Dr. Mosahab and his research about Khayyam, Mr. Abolghasem Ghorbani and his papers about a number of erudite and Mr. Daneshpazhouh and Danaseresht and their study about Abu Rayhan2 and Khawaja Tusi3 and some others insofar as I know.)
In mathematics from the Greek era thereafter brief progress has been realized in Medieval and Islamic age. Indeed endeavor of scientists has been more directed to translations of scientific works from Greek and Syrian to Arabic, furthermore it has been mostly contented with description and comment of Euclid and same other Greek scientists. The most significant mathematical work, in the first stage, the regularization of algebra has been fulfilled by al-Khwarizmi4 so that in European languages, now, the deductive principles of Algebra have been ascribed to al-Khwarizmi and called algorithm (this word is anagram of the name al-Khwarizmi).
In the second stage, it includes Khayyam's works in geometry about parallel postulate and in Algebra about classification and the solution of cubic equations.
The significance of Khayyam's scientific work is so apparent among experts that demonstrates him relative to his own era four centuries closer to contemporary era, namely, Khayyam's works in Algebra belong to Descartes', Pascal's and Newton's age instead of Khayyam's own time.

Khayyam's study in Euclid's axiom or parallel postulate

In geometry book known as Euclid's Elements that the base of geometry is ascribed to him, an axiom is accepted that is mentioned as Euclid's axiom or parallel postulate and it is such that from a point out of strict line it can be drawn just one parallel line with that line so that they are all in the same plane.
Euclid accepts this axiom definitively and apparently and since clarity and clearness of this postulate like the other Euclid's elements is not so manifest from that time, in order to analysing and leading this axiom to other Euclid's axioms it has been taken efforts that eventually by Lobachevsky5's researches it has been led to the foundation and deduction of new geometry.
Khayyam, in his own contribution to prove this postulate or to lead it to a simpler one, has also proceeded a treatise as “Explanations of the difficulties in the postulates in Euclid's Elements”.
Khayyam's view and analysing method in this treatise is more or less similar to the mathematicians' works early the 19th century and Khayyam's conclusion is so summarized:
“Maybe the system that I apply to explain and reason for this postulate, be more logic and clear than Euclid's method”. During Khayyam's research in this work, it is observed that Khayyam seems uncertain to accept this postulate as a unique indisputable one. Indeed, as if he sees no impediment logically to deny this postulate. He accepts inevitably it just empirically.
Consideration of two points here is so important: the first is that according to Khayyam's view between logic and mathematics, there exists somehow a close dependency so that introduces parallel postulate in other form which is in his view more logical than Euclid's method. The second is that geometry in Khayyam's view is a science of abstract shapes that are absorbed in abstract space and this point is so important. Since for Greek the space was not authentic and the position of objects according to Archimedes' opinion was considered as the position of objects and shapes and now we know that the imagination of abstract space has worthy contributed to progress of mathematics and physics.
The connection between logic and mathematics in Khayyam's view leads to a postulate that now is considered as a basic foundation of science in philosophy and it is causality in the concept of scientific. The leisure is short and the discussion about this problem is not in scope of these words, it is just sufficient to mention to it what is discussed in sciences as cause and effect and the causality relationship between them, is a kind of coordination and uniformity in measurement and the result of comparisons that has remained constant and does not change and the point that as “to be free of thought and to conquer mystery of the universe” is already mentioned is the same problem that
relationship causality between evident objects whatever is, the manner of appearing of these objects is constant and Khayyam takes care of this issue exactly and in his own quatrains he has mentioned it frequently. Always the sign of beings has been.

Algebra and cubic equations

In the research that Khayyam has carried out, he has required the expansion of various powers of a “binomial” and has found out the formation of the coefficients of this expansion as a rule and regulation that nowadays is known as Pascal's triangle.
The algebraic binomial expansion is nowadays known as Newton's binomial theorem, since for the first time apparently Newton has codified these computations. Considering that Khayyam has used this expansion and the regulation of the formation of its coefficients in his works, it is clarified that Newton's binomial theorem and Pascal's triangle have been discovered and innovated almost four centuries before these scientist by Khayyam. For the first time, this point was mentioned by Mr. Abolghasem Ghorbani, school teacher in the Culture Ministry, in one of magazine in Tehran and he published some papers about it. Sometime after in one of international congress of the history of sciences that held in Rom, foreign scientists mentioned it as well and Rozenfeld, professor in Moscow University, submitted a suggestion concerning to change of the name Newton's binomial theorem and Pascal's triangle to the name Khayyam's binomial theorem and Khayyam's triangle to congress.
About the third degree equations, Khayyam is the first that classified them and mentioned some regulations to solve each of them by using conic sections. If it is considered that this method is indeed analytical and geometrical method, then it can be said that Khayyam is the first that has used analytical geometry to solve algebraic equations and in this regard, he has innovated analytical geometry almost four centuries before Descartes.
If is noticed that notations, form of algebraic equations in the present forms and signs in Khayyam's era has not at all exist, the significance and worthy of Khayyam's mathematical works would be more appreciated and better perceptible.
Khayyam has compiled a brief treatise about determination of carat gold, silver and ingot that has been combined by these two metals, actually is the explanation of know as Archimedes' method and his famous experience.
In this case, Khayyam also uses analytical and argumentative method to explain the famous Archimedes' principle that is not unlike to the present theoretical method.
The corrections of Zij Malekshahi and Jalali have enjoyed also Khayyam's endeavors. And here it is
contented with this brief mention.
In the imputation that it has been attributed to Khayyam contrary to equity and generosity, it should be careful that this erudite impossibly withholds to teach and this is contrary to ethic and knowledge to abstain to teach knowledge to apprentices. No doubt, those who did not know even elementary terminology, asked Khayyam to explain and the sage was not able to answer of necessity due to inadequate understanding of questioner and he has silenced and maybe has avoided to answer. And he has been attributed to withhold and been oppressed.
Khayyam's scientific position is at least in mathematics so much honorable and it is believed that he is the greatest mathematician in his own era and possibly can be said the greatest mathematician in Islamic age.
In comparison with al-Khwarizmi, Abu al-Rayhan and Ghiyath al-Din Jamshid al-Kashi6 , all are the top stars in the first place and justly Khayyam is the most eminent of this group.
The spiritual and scientific worth of Khayyam with regard to this that this scientist has not proceeded to found philosophical school, is more appreciated. Since philosophical issue if it has been even precisely presented and asked, does not have confidential and certain answer.
The mind of a scientist like Khayyam with clear and reasonable introductory could not be scientifically and principally like philosophical issues that are pessimistic and unstable with a view of sentiment and impressible existence. Furthermore, hypotheses and sentences of his previous or contemporary philosophers do not convince Khayyam. Hence he is weary of philosophical issues and elusive of philosophers. Similarity, though it would be little, between Khayyam and Buddha can be found that a derisive smile to deceitful manifestations of life has appeared on both their lips and has summoned both of them to silence and amnesia. Both of them have perceived affliction and both have attained maturity through containment, renunciation, connivance and forgiveness for high afflictions and their therapy, but none has argued and was aetiologist and has proceeded to found a new philosophical manner.
Both have seen the life of human as commiseration and compassion and have salved kindly human's trauma whether individually or socially. Tolerance and longanimity of heterogeneous thoughts that is well known as characteristic of Iranian race, is perfectly evident in Khayyam and can be said that Khayyam is the distillate and extract of centuries Iranian thoughts, contemplations, search and acquisition and is the result of a long endeavor, efforts, eminence and perfection of humanity. His doubt is closer to reality rather than of unawares' certainty who are claimant of wisdom and his perplexity is more ordered and regulated than of tranquility of those who reposed. Here is a position that words are unable and incapable to explain.
1Edward Fitzgerald
2Abu al-Rayhan Muhammad ibn Ahmad al-Biruni (973-1048)
3Khawaja Muhammad ibn Muhammad ibn Hasan Tusi(1201-1274)
4Abu Abdallah Muhammad ibn Musa al-Khwarizmi (780-850)
5Nicolai Ivanovich Lobachevsky (1792-1856)
6Ghiyath al-Din Jamshid al-Kashi or al-Kashani (1380-1429)


Translator: Fariba Elliee

۱۳۹۱ اسفند ۴, جمعه

Interview with Professor Dr. Mohsen Hashtroudi

The editor of Yekan magazine got honoured that during a short interview to inquire professor
Dr. Hashtroudi’s biography and some of his comments and opinion about some issues and
theme in mathematics.

It is hoped that it made to provide satisfaction of that group of magazine readers who
requested repeatedly the publication of his photo and biography.

-

Your excellency biography will be a part of contemporary history of mathematics in
Iran, hence it is requested that you state your own concise biography, the record of
your studies and education in Iran and abroad, teachers and professors and those who
have been impressive on progress of your scientific authorities.

- On January 11, 1908 I was born in Tabriz. I passed elementary education in
Aghdasiyeh and Sirous schools and high school in Dar al-Fonun, in 1925 I graduated
from dar al-Fonun and for several years I studied medicine. On the first journey I
departed Europe, in returning in Daneshsara Aali (Dar al-Moalemin), the National
Teachers’ Training College, that had been founded, I chose mathematics and I am
from its alumni of the second groups. On the second journey I departed France, from
Paris faculty of science I have received bachelor degree and in 1937, I have received
state doctorate degree from Paris Sorbonne University. In 1939 I returned to Iran
and was appointed as associate professor to teach in Daneshsara Aali, the National
Teachers’ Training College and then in the faculty of science in Tehran University, in
1943 I became professorship and later on in addition to the professorship in university
I have held the following positions: in 1944 the head of culture in Tehran, in 1953
the chancellor of Tabriz University, in 1959 the head of science faculty in Tehran
University.

In 1945 I have married and own three children: two daughters and one son.

Among my teachers: first of all my deceased brother Mohammad Zia Hashtroudi
of
whom is the foundation of my teachings. The deceased Gholamhossein Rahnama
by whom most teachers and professors generally are trained and cultured. And among
teachers who are alive, all take part in my basis nurture and trainings in particular Mr.
Abdolazim Gharib, the university teacher, from whom I have learned knowledge and
decorum what I have now. In particular, our mental tarinings and of most students have
been educated by this liberal man. Mentally and morally, I am indebted to all my own
mentors, teachers, instructors and educators.

Mr. Keyhan, in addition to teaching, in his own vice chancellorship, has taught me for
a long time. Out of teaching groups, many of my prosperities and success (that are so
negligible and insignificant) are indebted to auspices of my advisor Mr. Dr. Siasi that
all know that the foundation of Tehran University and commemorations of teachers and
professors held his high obligation and responsible for that are honorable and venerable;
and he is still now leader and advisor of acquisitives like me.
Among my university teachers and professors: first of all, the deceased Élie Cartan,
the
founder of modern mathematics, to whom I am indebted almost all my knowledge in
mathematics, was my professor and supervisor of my PhD thesis and in general he was my
academic educator. The present teachers and professors in Paris University who are most the
students of this deceased professor, are my fellow-students or my advisors such as: Professor
Erzmann in Sorbonne, Professor Lichnerowicz1 in Collège de France, the deceased Professor André Lichnerowicz (1915-1998 Weyl2 in Princetone3, the USA (who was my advisor when I was studying and researching
in Princetone), Professor Schouten4 in Delft – Netherlands (who is now the president of the
mathematical Institute in Amsterdam), Professor Vinogradov5 and the deceased professor
Finikev in Moscow State University and some others.
- in which theme and field has your doctorate thesis been written and who has been the
supervisor? Which compilations, essay and papers of yours have been yet published?
- The theme of my doctorate thesis has been about the space of projective elements
(point, line or plane) with normal connection and my supervisor, as has been already
mentioned, was the deceased professor Élie Cartan.
From my compilations and papers what are in related to mathematics: some papers
in infinitesimal geometry of general space and in particular non-holonomic spaces,
some papers about geometry of normal space and isomorphic shapes, some papers in
analytical mechanic and dynamical systems, some papers in differential geometry, the
generalization of Euler theorems in continued fractions, application of continued fractions
to solve differential equations and in particular determination of solvability cases of
Riccati equation, the law of Boolean algebra in mechanic of superspaces, weylian space
with normal connection, Schouten space with fixed invariants and some other papers.
Some of these papers have been published as collections in French by Tehran University
publication.
- (To and with) whom of scientists, mathematicians and academic celebrities have you
coordinated and communicated and in which international congress of mathematicians
(ICM) have you taken part up to now?
- Up to now I have taken part in four international congress of mathematicians (ICM):
Harvard, Cambridge, the USA; Amsterdam, Netherlands; Edinburgh, England; Nice
(the international congress of Latin mathematicians). In addition to the participation
in congresses, by invitation of academic assemblies and communities of various
countries, I have attended and lectured there such as: the invitation of the science
Academy, USSR; the invitation of science Academy of Bucharest; the invitation
of Moscow State University and once again the invitation of the science Academy,
USSR; the invitation of Yehvout Institute, Israeal and introduction of researchers and
professors in this institute; the invitation of scientific congress, Pakistan; the invitation
of the science faculty in Paris in order to lecture.
With and to scientists and mathematicians whom I coordinate and communicate,
inaddition to the professors who were mentioned: Professor Sterwik (in M.I.T., the USA);
Professor Zariski Chern (Chicago); Professor Albert (the USA); Pprofessor Raishelinski
(Moscow); Aleksanderov (Leningrad); Kalozhenin (Kiev); Javad Maghsoudov (Baku);
Zegreo Boumpiani (Italy); a number of professors and researchers in London and
Manchester; Professor Haimoviji (Bucherst); Muysel and Veranchanou (Bucherst);
Professor Stoylef, the president of mathematics academy, Bucharest and secretary general
of Bucherst academy.
- Who are Iranian mathematicians who have international renown and do not live in
Iran?
- Professor Reza, in the united states, the university of Ciracos New York; Dr. Khosrow
Shadan, the atom Cycle Centre , Oaris; Dr. Avansian, Strasbourg University (recently
he left Iran); Dr. Akbarzadeh, Paris (he is due to return to Iran); Dr. Meraat, Research
Centre, France (Dr. Shadan, Dr. Akbarzadeh, Dr. Meraat and Mrs. Dr. Ghaznavi are
researchers in France Research Centre); in France some others whose names I do not

Hermann Weyl (1885-1955)
Institute for Advanced Study in Princeton, New Jersey
4 Jan Arnoldus Schouten (1883-1971)
5 Ivan Matveyevich Vinogradov (1891-1983)





know presently, work in France; In the USA: Dr. Amir Moez and Dr. Abian (who
teach); Dr. Ali Asgharzadeh (experienced university teacher in Colombia University);
and some others.
- What is the most significant evolution that has nowadays arisen in mathematics
and how have academic curricula and courses been adjusted extently in Iran to this
evolution?
- The most significant mathematical evolution is to propound sciences in modern
forms that has been unprecedented and as the results of Cantor’s and Klein’s thoughts
(German school) has arisen such as: topology, abstract algebra, diagram theory,
information theory and in general mathematical model and pattern for other techniques
and technologies (applied mathematics), in particular tendency to micro structures that
has made highly impression on physic progress.
In Iranian universities are taught introdutories of some of these courses and this year it is
considered that by returning of Dr. Akbarzadeh and some other professors and teachers,
their teaching will be completed.
- Does teaching modern mathematics in university necessitate to revise mathematical
curricula in high schools and if necessary, what is scientific authority more competent
to revise?
- In Iran the curricula of high schools should have coordination with curricula in other
countries and perhaps it would be necessary, pupils would be acquainted with new
and modern concepts from the second year in high schools. Youth should be advised
and guided as for the scientific requirements of the country and their susceptibilities,
and in Persian language and literature and foreign language courses instructions
should be performed rather much more fundamentally and profoundly so that, as
each pupil would learn well a foreign language. Since either reading or research and
even studying without knowing a foreign language and at least two languages is not
possible.
The most competent authority to revise curricula and courses are experienced school
teachers who are acquaintance with evolutions and developments in sciences and of
course university teachers should conclude their own long experiences and point out
disadvantages of instruction in high schools and substantial requirements of pupils.
- In order to develop the level of scientific information for pupils and acquaint teachers
with new curricula and courses that are due to be inserted, which method do you
suggest?
- Not bad that common competitions would be organized and held for pupils in every
fields and individuated excellent pupils and encouraged them and assisted and
supported their studyings and even provided nacessary facilities for higher education
and to enter and study in university in a field that they are distinguished. The
significant point is that it should not be paid all attention just to Tehran, how many
excellent students who live in provinces and when come to Tehran, it is provided no
possibility for them to make themselves suggestion. Better is that these pupils are
recognized. Universities in provinces should be mobilized and setting up common
courses in provinces that the culture ministry contemplates to execute, is pursued.
Experienced school teachers are appointed also to teach and it is a program that
performs and regards in other countries: school teachers and instructions are appointed
to apprenticeship who not only become mentors for students, but prepare themselves
to teach academically in university and briefly teachers should be trained and educated
by their own guilds, a good university teacher is the same high school teacher who
has gone through integrity. Most of school teachers whom I know, are reading and
studying orederly and the best assistants to teach in higher educations and universities
have been teachers. As they are assigned to assist in teaching in the faculty of science

in Tehran University and Daneshsara Aali, the National Teachers’ Training College.
Beside organizing and holding course competetions for pupils, for school teachers a
typical association, society or seminars should be established or organized in order that
helps to advance their scientific knowledge and as well makes typically intellectual
(and even social) promotions for them. The organization of scientific congresses and
participation of school teachers in them is the most significant and appreciable. In
international congresses of mathematicians, a session concerns with the teaching of
mathematics to exchange opinions about teaching methods.
- With which international journals and magazines do you contribute and what is the
most significant mathematical journal?
- In the world more than 500 mathematical magazines and journals are published that
each of them has been professionalized in a field and mention of their names is not
possible. In Iran, universities and mathematics institute that are established, should
subscribe them and make them availabe to each interested. There are some journals
that are allocated to review scientific papers and abstracts of all scientific papers are
inserted there and interested can obviate her or his onself requirements. For instance,
the most well-known of them is Mathematical REVIEW of AMS and in Russia some
authentic journals are published in Russian and in all these journals abstracts of papers
that have been published in other journals, are also mentioned. In Iran also if an
institute would be established, it should employ translators who translate these papers
and make them available to interesteds.
Translator: Fariba Elliee