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bio website iecl.univ-lorraine.fr/…
location Nancy, France
age 64
visits member for 5 years, 7 months
seen 2 hours ago

Email: pierre.yves.gaillard at gmail.com

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Apr
22
awarded  Custodian
Apr
22
reviewed Edit A naive question about the double dual of a vector space
Apr
22
revised A naive question about the double dual of a vector space
improved formatting, changed "second dual" to "double dual", which seems slightly more standard
Apr
14
awarded  Popular Question
Jan
14
awarded  Popular Question
Nov
8
comment Is PA consistent? do we know it?
@DavidRoberts - Sorry, I didn't express myself well. I shouldn't have said "explicit". I edited. Thanks!
Nov
8
revised Is PA consistent? do we know it?
removed a word
Nov
8
answered Is PA consistent? do we know it?
Aug
21
awarded  Necromancer
Aug
12
asked Is there a positive integer k such that any endomorphism of any free module over any commutative ring is a linear combination of k idempotents?
Aug
8
comment Trace of the identity map in a projective module
PS. I think $M=M/(1-e_i)M$ should be $M_i=M/(1-e_i)M$.
Aug
7
comment Trace of the identity map in a projective module
Dear Neil: I'd be most grateful if you could tell me whether what I wrote here is correct.
Jul
2
awarded  Curious
Jun
12
revised A naive question about the double dual of a vector space
edit clearly indicated
Jun
5
revised Dimension of infinite product of vector spaces
rewrote the answer
Jun
1
revised Dimension of infinite product of vector spaces
added EDIT 2
May
30
revised Dimension of infinite product of vector spaces
edit clearly indicated
May
30
comment Dimension of infinite product of vector spaces
Dear Todd: This is just to tell you that I posted a minor complement to your great answer as a community wiki answer.
May
30
comment dim Hom(V,W) =?
To me, it was invaluable! (Also I now realize - thanks to you, Todd and François - how easy it was to answer my question using the Erdős-Kaplansky Theorem, and how silly my approach was...)
May
30
comment Dimension of infinite product of vector spaces
Dear François: Here is a tiny bit of nitpicking. I find your question very nice, but I think it would be more correct to write in your blockquote "a family of nonzero vector spaces" instead of "a family of vector spaces".