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John Machacek

Toronto, ON, Canada

https://www.yorku.ca/machacek/home.html

York Science Fellow at York University.

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Top Questions
Top Answers
128
Why do we still do symbolic math?
math.stackexchange.com

23
The list of problems for Grothendieck's thesis
mathoverflow.net

20
The role of 'arbitrary' in proofs
math.stackexchange.com

13
Are there invariants of cell complexes similar to the Euler characteristic?
mathoverflow.net

13
Computational complexity of computing simplicial homology
mathoverflow.net

12
Densest Graphs with Unique Perfect Matching
mathoverflow.net

11
Denominators of certain Laurent polynomials
mathoverflow.net

11
Integer but not Laurent sequences
mathoverflow.net

10
Combinatorial identity
math.stackexchange.com

10
The current status of the conjecture on algebraic matroids
mathoverflow.net

9
On additive/multiplicative property of permanent
mathoverflow.net

9
Is there a classification of polynomial Poisson brackets?
mathoverflow.net

8
Homotopy type of non-Cohen-Macaulay complexes
mathoverflow.net

7
Mathematician who talked about the probability of a “good” graph?
math.stackexchange.com

7
Counting tournaments with ties
mathoverflow.net

7
Minimum modifications to make a graph bipartite
mathoverflow.net

7
Irreducibility of family of polynomials
mathoverflow.net

6
Application of toric varieties for problems that do not mention them
mathoverflow.net

6
What are the relations among canonical basis, dual canonical basis, Semicanonical Basis, dual semicanonical bases?
mathoverflow.net

6
Graphs with prescribed numbers of k-cliques
mathoverflow.net

6
Create a graph with a specified number of spanning trees
mathoverflow.net

6
Combinatorial interpretation for coefficients of reciprocal of power series
mathoverflow.net

6
Show that the image of a linear transformation is equal to the kernel
math.stackexchange.com

6
Soft question about the square root
math.stackexchange.com

5
Show $L_1 \subseteq L_2$ or $L_2 \subseteq L_1$
math.stackexchange.com

5
Construct a non-connected graph with a given degree sequence
mathoverflow.net

5
How a “sequentially Cohen–Macaulay” simplicial complex relates to “Cohen–Macaulay” simplicial complex?
mathoverflow.net

5
“Small” simplicial complex with torsion trees
mathoverflow.net

5
relate shellability of a simplicial complex to the links of its faces
mathoverflow.net

5
“Totally transitive” polytopes which are not regular
mathoverflow.net

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