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9h

comment 
Derivative in terms of finite differences
Have you checked Jordan's classic book The Calculus of Finite Differences? 
Jul 16 
comment 
Why is the Gamma function shifted from the factorial by 1?
$\int_0^z \frac{x^{t1}}{(t1)!} \frac{(zx)^{s1}}{(s1)!} \, dx = D_{z}^{s} \frac{z^{t1}}{(t1)!} = \frac{z^{s+t1}}{(s+t1)!}$ is easy to remember if one can remember to associate $s=1$ with integration and $s=0$ with the identity or Dirac delta function. 
Jul 8 
comment 
Your favorite papers on geometric group theory
Similar to mathoverflow.net/questions/3858/… 
Jul 6 
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In “splendid isolation”
@Wlodz: See also the comments in the preface of Needham's "Visual Complex Analysis" on geometry and Newton's calculus. 
Jun 21 
comment 
Motzkin polynomials and enumeration of chord diagrams
Good. I don't think you can access the draft edits unless you are a registered contributor to the OEIS. I'll send you pfds through email of the current drafts. 
Jun 21 
comment 
Motzkin polynomials and enumeration of chord diagrams
Do you mind if I cite this answer in the OEIS? Btw, the coefficients of these polynomials factor to give relations to other entries of the OEIS that have been in the queue for publishing for a couple of days now. 
Jun 21 
accepted  Motzkin polynomials and enumeration of chord diagrams 
Jun 19 
revised 
Motzkin polynomials and enumeration of chord diagrams
added 1 character in body 
Jun 19 
asked  Motzkin polynomials and enumeration of chord diagrams 
Jun 18 
revised 
Newton series and Fourier transform  is there an analogy?
index typo 
Jun 5 
revised 
Why is there a connection between enumerative geometry and nonlinear waves?
author's name corrected 
Jun 4 
awarded  Nice Answer 
Jun 4 
revised 
First to note the relation between Stasheff polytopes (associahedra) and compositional inversion?
more tags 
Jun 4 
asked  First to note the relation between Stasheff polytopes (associahedra) and compositional inversion? 
Jun 1 
comment 
Geometric / physical / probabilistic interpretations of Riemann zeta(n>1)?
mathoverflow.net/questions/151706/… for Harden's comment. 
Jun 1 
comment 
Geometric / physical / probabilistic interpretations of Riemann zeta(n>1)?
arxiv.org/abs/1305.5502 for Nash's comment. 
May 31 
comment 
What is Lagrange Inversion good for?
See also page 7 of "Formal group laws and genera" by T. Panov. 
May 31 
revised 
What is Lagrange Inversion good for?
Added relation to noncrossing partitions 
May 21 
awarded  Revival 
May 20 
comment 
Cycling through the Zeta Garden: Zeta functions for graphs, cycle index polynomials, and determinants
@Draks: I'm denoting the matrices for the OEIS examples, not specifically for the Ihara zeta. 