Francois Ziegler

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Name Francois Ziegler
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May
2
 accepted Reference request - localisation de g-modules
May
1
 answered Reference request - localisation de g-modules
Apr
29
 comment Defining Equations of a Flag Variety
Also, Weyman's "Cohomology of Vector Bundles and Syzygies", §3.1, seems to do what you want. books.google.com/…
Apr
8
 answered surjective submersion and fibrations
Mar
9
 accepted Reference request: Lascoux’s formulas for Chern classes of tensor products and symmetric powers
Mar
8
 answered Reference request: Lascoux’s formulas for Chern classes of tensor products and symmetric powers
Feb
24
 answered spectacular applications of functional analysis in resolutions of apparently unrelated problems
Feb
21
 answered Stabilizers for Nilpotent Adjoint Orbits of Semisimple Groups
Feb
8
 awarded ● Fanatic
Jan
22
 awarded ● Nice Answer
Jan
22
 revised Why all irreducible representations of compact groups are finite-dimensional ? [EDIT: Subtleties: AC,etc]
grammar
Jan
21
 comment Why all irreducible representations of compact groups are finite-dimensional ? [EDIT: Subtleties: AC,etc]
@Aakumadula: You are quite right about Schur's Lemma. (A detailed reference for it would be Hewitt-Ross, p. 324.) So I'd call this proof short and simple, but not quite "elementary".
Jan
20
 answered Why all irreducible representations of compact groups are finite-dimensional ? [EDIT: Subtleties: AC,etc]
Jan
8
 accepted When do commuting Hamiltonian flows have commuting generators?
Jan
3
 awarded ● Nice Answer
Dec
27
 comment Is there a “geometric” intuition underlying the notion of normal varieties?
Matthew -- Thanks; you are quite right and I have edited accordingly. (To me the main interest here was the statement that normality has origins earlier than Zariski.)
Dec
27
 revised Is there a “geometric” intuition underlying the notion of normal varieties?
a precision
Dec
27
 answered Is there a “geometric” intuition underlying the notion of normal varieties?
Dec
27
 revised The origin of sets?
added 131 characters in body
Dec
26
 revised The origin of sets?
translated into English
Dec
23
 answered The origin of sets?
Dec
19
 accepted What is the structure of the space of solutions of a non linear ODE?
Dec
9
 revised What is the structure of the space of solutions of a non linear ODE?
added 14 characters in body
Dec
9
 comment Homotopy $\pi_4(SU(2))=Z_2$
<google.com/search?q=Π4(S3)>
Dec
8
 answered What is the structure of the space of solutions of a non linear ODE?
Nov
30
 awarded ● Enlightened
Nov
30
 awarded ● Nice Answer
Nov
29
 revised maximal subgroups of finite simple groups
added 294 characters in body
Nov
29
 revised Fundamental motivation for several complex variables
added 4 characters in body
Nov
27
 answered Fundamental motivation for several complex variables