المرجع الالكتروني للمعلوماتية
المرجع الألكتروني للمعلوماتية

الرياضيات
عدد المواضيع في هذا القسم 9761 موضوعاً
تاريخ الرياضيات
الرياضيات المتقطعة
الجبر
الهندسة
المعادلات التفاضلية و التكاملية
التحليل
علماء الرياضيات

Untitled Document
أبحث عن شيء أخر المرجع الالكتروني للمعلوماتية
{افان مات او قتل انقلبتم على اعقابكم}
2024-11-24
العبرة من السابقين
2024-11-24
تدارك الذنوب
2024-11-24
الإصرار على الذنب
2024-11-24
معنى قوله تعالى زين للناس حب الشهوات من النساء
2024-11-24
مسألتان في طلب المغفرة من الله
2024-11-24

احكام الارضين المفتوحة
2024-06-24
العلاقات العامة
3-8-2022
أوّل ما أنزل من القرآن في مكة والمدينة
2023-05-21
أوّل الراكعين
2023-03-28
تفسير الآية (33-37) من سورة ال عمران
24-2-2021
متوازي الاضلاع Parallelogram
3-12-2015

Herbert William Richmond  
  
145   01:50 مساءً   date: 19-3-2017
Author : E A Milne and F Puryer White
Book or Source : Herbert William Richmond 1863-1948, Obituary Notices of Fellows of the Royal Society
Page and Part : ...


Read More
Date: 21-3-2017 156
Date: 30-3-2017 232
Date: 21-3-2017 185

Born: 17 July 1863 in Tottenham, Middlesex, England

Died: 22 April 1948 in Cambridge, England


Herbert Richmond's father was William Hall Richmond (born Sedgefield, Durham about 1832) who was a chaplain at Draper's College, Tottenham and a schoolmaster. His mother was Charlotte Mary Richmond (born Ewell, Surrey about 1836). Herbert William Richmond had younger siblings, George (born about 1865), Margaret (born about 1867), Ethel (born about 1869) and Alfred (born about 1872).

Herbert entered Merchant Taylors' School in London in 1875 and studied there until he graduated in 1882. In the same year he entered King's College, Cambridge, to read mathematics. He went to Cambridge as a Barnes Scholar having won both an open Eton Scholarship and a scholarship from his own school.

At King's College, Richmond was coached by the famous coach Dr Routh. He was highly successful, and he was Third Wrangler, meaning he was ranked third among the First Class students in the Mathematical Tripos examinations (Love was one place above him). He graduated with a BA in 1885. However the rigours of the Tripos had taken its toll. According to Richmond the intense work needed to succeed at Cambridge made him turn away from mathematics after his graduation and he took up music for a while. However his love for mathematics soon returned and, after writing a dissertation on algebraic geometry, he was awarded a Fellowship to King's College, Cambridge, in 1888.

Richmond was a college lecturer from 1891 to 1927 and, in addition, a university lecturer from 1901 until he retired in 1923. His main work was in algebraic geometry. Writing in February 1946 he set the scene for his research work in the following, rather delightful, way:-

In 1885 Cayley and Salmon had carried forward the investigations of the earlier German geometers, Hesse, Steiner, Plücker and other; and Salmon had expounded the subject in treatises which for clarity of style are still unrivalled. Further, the Italians, Corrado Segre and Castelnuovo were opening the way into a vast unexplored field, geometry of more than three dimensions. Rarely has a branch of science offered more inviting prospects for a novice hoping to undertake research.

Yet I must now admit that my devotion to this one branch of mathematics has been in some degree unfortunate; for time has shown (what might perhaps have been foreseen) that the elementary algebraic methods, so effective and so admirable when applied to the simpler curves and surfaces, fail to produce results when applied to loci of higher order. Often, no doubt, no relations of an elementary nature exist, and the search for them is bound to end in disappointment. Nevertheless, methods of elementary algebra may still be employed with success both in geometry proper and in applications such as arithmetical properties of rational functions. It is true that the scope of these methods is restricted, but there is compensation in the fact that when geometry is successful in solving a problem the solution is almost invariably both simple and beautiful.

The last sentence explains why so many of my published papers are very short. A result already known is obtained in a simple manner.

Admittedly I have spent much time advocating old-fashioned methods which have fallen into undeserved neglect (in my opinion). This does not imply lack of appreciation of modern methods...

Of course it is always good to look at opinions of researchers other than their own! Here is how Richmond's research is described in [1]:-

Richmond's mathematical researches lay in the field of pure and algebraic geometry, though he also lectured to generations of undergraduates on differential geometry. His papers always showed the characteristics of elegance and apparent effortlessness. His forte lay in seeing the relations between apparently diverse theorems, and he was especially at home in the projective properties of figures in spaces of more than three dimensions, but he did not disdain the consideration of elementary theorems in plane geometry; he would remark a little sadly that his results were remote from the trends of modern geometry.

Richmond was honoured by being elected a Fellow of the Royal Society in 1911. He was an active member of the London Mathematical Society for many years and served as its President from 1920 to 1922. He was also honoured by the University of St Andrews in the award of an honorary degree in 1923.

Special mention should be made of the work Richmond undertook during World War I. He was attached to the Ministry of Munitions and he undertook research into ballistics at the Royal Naval Gunnery School on Whale Island, Portsmouth, with Sir Ralph Fowler. He continued his work on spinning shells after the war ended and published the two volume work Text book of AA (anti-aircraft) Gunnery in 1924. His work in this area strongly influenced later work on ballistics undertaken during World War II. Unfortunately this work at Portsmouth involved experimental work with explosives which left him partially deaf. In 1923 he resigned from the committees he was serving on since he felt that his deafness prevented him following the business and playing a full role in the work of the committee.

Outside mathematics his other interests included music, an interest in flowers, birds and flora. He enjoyed trips to the Orkneys and Shetlands to photograph birds which he did with photographs of professional quality. A E Milne, writing in [2], says:-

But shining through his special interests was his genius for friendships with men of all academic generations. He endeared himself to all of them by his utter sincerity and unpretentiousness, his extreme modesty, his engaging humour..., his faithfulness... . He was a lovely person to know.

Similar sentiments are recorded in [1]:-

No bare recital of his achievements and interests can possibly convey the true flavour of the man, his emphatic modesty, his engaging humour, his humanity, his outstanding sympathy with men of all generations, his impatience with anything pretentious or shoddy.


Articles:

1-E A Milne and F Puryer White, Herbert William Richmond 1863-1948, Obituary Notices of Fellows of the Royal Society 6 (1948-49), 219-230.

2-E A Milne and F Puryer White, Herbert William Richmond, J. London Math. Soc. 24 (1949), 68-80.

 




الجبر أحد الفروع الرئيسية في الرياضيات، حيث إن التمكن من الرياضيات يعتمد على الفهم السليم للجبر. ويستخدم المهندسون والعلماء الجبر يومياً، وتعول المشاريع التجارية والصناعية على الجبر لحل الكثير من المعضلات التي تتعرض لها. ونظراً لأهمية الجبر في الحياة العصرية فإنه يدرّس في المدارس والجامعات في جميع أنحاء العالم. ويُعجب الكثير من الدارسين للجبر بقدرته وفائدته الكبيرتين، إذ باستخدام الجبر يمكن للمرء أن يحل كثيرًا من المسائل التي يتعذر حلها باستخدام الحساب فقط.وجاء اسمه من كتاب عالم الرياضيات والفلك والرحالة محمد بن موسى الخورازمي.


يعتبر علم المثلثات Trigonometry علماً عربياً ، فرياضيو العرب فضلوا علم المثلثات عن علم الفلك كأنهما علمين متداخلين ، ونظموه تنظيماً فيه لكثير من الدقة ، وقد كان اليونان يستعملون وتر CORDE ضعف القوسي قياس الزوايا ، فاستعاض رياضيو العرب عن الوتر بالجيب SINUS فأنت هذه الاستعاضة إلى تسهيل كثير من الاعمال الرياضية.

تعتبر المعادلات التفاضلية خير وسيلة لوصف معظم المـسائل الهندسـية والرياضـية والعلمية على حد سواء، إذ يتضح ذلك جليا في وصف عمليات انتقال الحرارة، جريان الموائـع، الحركة الموجية، الدوائر الإلكترونية فضلاً عن استخدامها في مسائل الهياكل الإنشائية والوصف الرياضي للتفاعلات الكيميائية.
ففي في الرياضيات, يطلق اسم المعادلات التفاضلية على المعادلات التي تحوي مشتقات و تفاضلات لبعض الدوال الرياضية و تظهر فيها بشكل متغيرات المعادلة . و يكون الهدف من حل هذه المعادلات هو إيجاد هذه الدوال الرياضية التي تحقق مشتقات هذه المعادلات.