log
2007
May 9 (Wed.) (colloquium talk)
Prof. Shigeru Kuroda (TMU)
An adventure of polynomial ring : Hilbert's 14th problem, a SAGBI basis and an automorphism
June 22 (Fri.) (joint with geometry seminar) 16:00-17:00 @ 8-618
Prof. Masahiko Saito (Kobe)
The Painleve properties of algebraic differential equations and minimal models
June 27 (Wed.)
Prof. Hiro-o Tokunaga (TMU)
On local trigonal fibrations
July 18 (Wed.)
Prof. Satoru Fukasawa (Waseda U.)
On the number of Galois points on a plane curve in positive characteristic
October 10 (Wed.)
Prof. Kiwamu Watanabe (Waseda U.)
Classification of polarized manifolds
admitting homogeneous varieties as ample divisors
January 16 (Wed.) (16:00-17:00)
Prof. Ryuji Tanimoto (Osaka U.) (16:00-17:00)
Computational invariant theory for the one-dimensional additive group
and Weitzenboeck problem
January 23 (Wed.)
15:30-16:00
Mr. Yukishige Takano (TMU)
A description of flipping contraction of three-dimensional toric variety with non-Q-factorial terminal singularities
16:00-16:30
Mr. Kohei Sato (TMU)
Existence of crepant resolution for abelian quotient singularities by order p elements in dimension 4
16:30-17:00
Mr. Taketo Shirane (TMU)
On some quadruple covering of plane
17:00-7:30
Mr. Hiroyuki Fukuchi (TMU)
On security of open key ciphering by use of algebraic surface
17:30-18:00
Mr. Yuki Ito (Niigata Univ.)
On the invariant rings of locally finite iterative higher derivations of a polynomial ring
January 30 (Wed.)
Prof. Shigeru Kuroda (TMU)
Shestakov-Umirbaev reductions and Nagata's conjecture on a polynomial automorphism