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By NTZung, on March 7th, 2018%
Tựa đề này là nhái theo “50 shades of grey”, tuy thực ra chắc là có nhiều hơn 50 sắc thái giả khoa học, nhưng ở đây tôi chỉ điểm danh 15 sắc thái giả khoa học quen thuộc nhất thôi, còn lại xin mời mọi người tự điền tiếp.
1 – Ngây thơ. . . . → Read More: 50 sắc thái giả khoa học
By NTZung, on October 26th, 2014%
Here is the new version of my invited talk
“A general approach to the problem of action-angle variables” (PDF File: AATalk2014, version 26/10/2014)
to be presented et the conference in honour of Charles Michel Marle’s 70th birthday in November 2014 in Paris.
Here is the website of the conference: http://www.imcce.fr/Equipes/ASD/person/albouy/Marle2014.html
By NTZung, on September 17th, 2013%
Next year I’ll come to Sanya, Hainan, China to attend “GAP XII”, an international conference on geometry and physics.
The organizers said they would have money to cover local expenses for a number of participants, so if anyone is interested in visiting Sanya, please contact them (or contact me if you don’t know them)
. . . → Read More: Geometry and Physics XII, Hainan (China), 10-14/03/2014
By NTZung, on November 12th, 2012%
http://www.bbc.co.uk/news/science-environment-20300100
Will have to try to understand what does it mean :D
By NTZung, on November 6th, 2012%
These are the notes that i’m trying to write up for the 5th lecture of my doctoral course “Basic principles of dynamical systems” in Toulouse. This lecture is about ergodicity.
I’m behind schedule in many things, so please be patient with me. The correct lecture notes will appear one day. I’m even planning to . . . → Read More: Dynamical Systems (5): Ergodicity
By NTZung, on August 21st, 2012%
Lecture Notes in Mathematical Finance (links to the files)
Link đến các files bài giảng
Trường hè (Đại học kinh tế – luật & Trung tâm JVN):
Phạm Huyên, Stochastic Optimal Control in Finance
Luciano Campi, Pricing and Hedging in Energy Market
Mathieu Rosenbaum, High Frequency Trading: Part 1, Part 2, Part 3
Hội . . . → Read More: Toán tài chính: các bài giảng trường hè và hội nghị 2012
By NTZung, on February 6th, 2012%
Below is a very interesting letter from Arieh Iserles about why should we boycott Elsevier:
—– I strongly encourage you to read the very recent posting of Doug Arnold on the IMU Journals’ blog, http://blog.mathunion.org/journals/ . Also, more humbly, my posting on Tim Gowers’s blog, Coming late to this discussion (but not to the issue . . . → Read More: Boycotting Elsevier: let’s join the efforts of our scientific community!
By NTZung, on December 9th, 2011%
I’m coming back here to an old but still open (as far as I know) problem:
Show that a generic Hamiltonian system with a fixed point and whose resonance degree at that point is at least 2 is not formally integrable.
Recall that, if the system is non-resonant then it’s formally integrable due to . . . → Read More: Formal non-integrability of resonant systems
By NTZung, on December 8th, 2011%
Last updated: 09/12/2011
This is a brief real-time report on the conference OSIF (Toulouse 1, 08-09/Dec/2011)
About 40+ participants. Some are my students :-) Lunchs and coffees are served at the conference free of charge for the participants :-). The organizers are A. Blanchet & S. Villeneuve (my colleagues at Toulouse 1)
Thursday:
9h30: . . . → Read More: Stochastic Control and Optimal Stopping in Finance (Toulouse 12/2011)
By NTZung, on November 29th, 2011%
(Devoir Maison No. 3, Licence 2 en Mathématiques, Novembre 2011)
Exercice 1. (Somme de carrés des coefficients). Soit un espace euclidien de dimension , et soit .
1) Montrer que, si et sont deux bases orthonormales de , alors
En déduire que la quantité est indépendante de la base orthonormale choisie.
(Indication: utiliser . . . → Read More: Exercices d’algèbre linéaire (DM3/2011)
By NTZung, on October 4th, 2011%
This is the list of books that we will order for the Doson School, with their ISBN numbers.
(There are too many books on the subject, and this selection is based mainly on the preferences of the lecturers).
1) B. Øksendal and A. Sulem: Applied Stochastic Control of Jump Diffusions, ISBN-10: 3540140239
2) H. . . . → Read More: Some Financial Maths Books with ISBN for Doson School
By NTZung, on August 17th, 2011%
We want to buy some books on financial mathematics and bring them to Vietnam for the thematic school in Doson (24/Oct-01/Nov/2011).After the school, these books will be donated to a library in Hanoi.
I need a list of best books to buy. If you have any suggestion, please let me know by writing a . . . → Read More: List of books to be bought for the school on financial mathematics
By NTZung, on May 23rd, 2011%
for incompressible flow, without external forces:
Here is the velocity field written in the cylindrical coordinate system , where is the radius and is the angle in the plane, is the pressure, and is the viscosity coefficient.
The continuity equation reads:
NB: is given by the formula , and the velocity field is:
Cylindrical . . . → Read More: Navier Stokes Equation in cylindrical coordinates
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