Gjergji Zaimi

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Name Gjergji Zaimi
Member for 3 years
Seen 2 hours ago
Website
Location Pasadena
Age 24
I am an undergraduate (mathematics) student at Caltech. You can contact me at gzaimi[]caltech.edu
15h
 answered How many Perfect Matchings in a regular bipartite Graph
2d
 accepted Lovasz theta function and independence number of product of simple odd-cycles
May
15
 comment Formalization (and background) of a formula, concering the integral points of a polygon.
Yes, that's the theorem I was referring to.
May
11
 accepted Formalization (and background) of a formula, concering the integral points of a polygon.
May
11
 accepted Trying to solve: Show that n does not divide 3^n - 2^n for n greater than or equal to 2.
May
11
 answered Trying to solve: Show that n does not divide 3^n - 2^n for n greater than or equal to 2.
May
7
 comment Can a harmonic number be a rational number for non-integer rational argument?
Oops! Thanks Vladimir!
May
7
 revised Can a harmonic number be a rational number for non-integer rational argument?
added 2 characters in body
May
7
 revised Can a harmonic number be a rational number for non-integer rational argument?
edited tags
May
7
 accepted Can a harmonic number be a rational number for non-integer rational argument?
May
7
 answered Can a harmonic number be a rational number for non-integer rational argument?
May
7
 revised average involving phi function
deleted 2 characters in body
May
3
 answered Formalization (and background) of a formula, concering the integral points of a polygon.
May
1
 awarded ● Nice Answer
Apr
25
 accepted Estimate on sum of squares of multinomial coefficients
Apr
25
 comment A divergent series related to the number of divisors of of p-1
See Igor's answer for an argument along the lines you want. mathoverflow.net/questions/27508/…
Apr
23
 comment What is flexible about flexible algebras?
@Samuele, if you want a definition of flexible algebras that doesn't have several occurrences of a variable in the same monomial, notice that an algebra is flexible iff $(x,y,z)+(z,y,x)=0$. The parenthesis denote associators.
Apr
23
 answered Estimate on sum of squares of multinomial coefficients
Apr
19
 comment A “bit” of primes
There is already a very nice article in the monthly about this :) jstor.org/stable/27641834
Mar
30
 awarded ● Enlightened
Mar
30
 awarded ● Nice Answer
Mar
26
 accepted Reduction of $f$-solubility to $1$-factor
Mar
22
 accepted Combinatorial interpretations of integral transforms
Mar
19
 comment Evaluating an infinite product of q-exponentials
What do you consider closed form here? A MacMahon type product? A generating function for plane partitions? Something else?...
Mar
13
 awarded ● Popular Question
Mar
12
 comment A possible refinement of a theorem of Malliavin
Marc, are you asking for motivation for my question or Malliavin's theorem?
Mar
11
 revised A possible refinement of a theorem of Malliavin
added 622 characters in body
Mar
8
 comment A possible refinement of a theorem of Malliavin
Thanks quid! The tag suggestion doesn't work for me, for some reason, and I tagged it by mistake.
Mar
8
 asked A possible refinement of a theorem of Malliavin
Mar
6
 revised principal specialization of projective Schur functions
added a tag
Mar
6
 comment Topological characterization of the closed interval $[0,1]$.
mathoverflow.net/questions/76134/…
Mar
4
 comment Number of Matchings in Regular Bipartite Graph
Is this homework?
Mar
3
 comment When adding a constant makes a multivariate polynomial reducible?
@Amit, on the contrary, such examples all follow from Newton polytope considerations. If the Newton polytope is not decomposable as a Minkowski sum, then such an $m$ does not exist.
Mar
1
 awarded ● Nice Answer
Mar
1
 revised Access to a preprint by D. N. Verma
edited tags
Feb
28
 answered Access to a preprint by D. N. Verma
Feb
28
 comment Can the SL_2 character variety of a three-manifold be nonreduced?
But now you know who to ask :)
Feb
28
 comment Can the SL_2 character variety of a three-manifold be nonreduced?
Coincidentally I was recently reading a paper of A. Sikora, where he mentions that $sl_2$ character varieties aren't always reduced as schemes. See section 12 in arxiv.org/abs/0902.2589 However, for the 3-manifold group case, he cites work of M.Kapovich that doesn't seem to be in print.
Feb
15
 revised principal specialization of projective Schur functions
added 101 characters in body
Feb
14
 accepted principal specialization of projective Schur functions
Feb
14
 answered principal specialization of projective Schur functions
Feb
13
 revised A “known” Pythagorean identity in algebra?
edited tags
Feb
13
 comment A “known” Pythagorean identity in algebra?
Look at chapter 1 in Macdonald's book on symmetric functions. Though, that identity is very close to the definition of the elementary symmetric polynomials :)
Feb
13
 answered A “known” Pythagorean identity in algebra?
Feb
11
 comment Decidability of periodic tilings of the plane
The tilability question is undecidable even if we restrict the tiles to be rectangles.
Feb
5
 comment Trichotomies in mathematics
The first and fourth bullet points are essentially the same trichotomy :)
Jan
29
 comment Sets of integers represented by degree zero rational functions
Ah, nice! The degree zero condition was an attempt at avoiding easy ways of encoding the MRDP theorem. Not a successful one, it seems! :-)
Jan
29
 comment How many values a polynomial map misses?
This question has appeared before with no actual answer mathoverflow.net/questions/6820/…
Jan
29
 asked Sets of integers represented by degree zero rational functions
Jan
28
 awarded ● Nice Answer