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Sera Gunn

New York City

https://seragunn.github.io

Lecturer in Mathematics, PhD

They/Them

Native English and some French

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Top Questions
Top Answers
104
Rigorous nature of combinatorics
math.stackexchange.com

45
What is the symbolic form of "there does not exist a largest natural number "
math.stackexchange.com

31
What's wrong with this truth table for implication?
math.stackexchange.com

23
PhD: admitted with TA with 5h a week, is it standard?
academia.stackexchange.com

21
Linear algebra doubt about the use of the word 'finite'
math.stackexchange.com

19
What are the pros and cons of the practice that includes some questions in a math exam which are directly discussed in the lectures?
academia.stackexchange.com

19
Binomial coefficients that are powers of 2
math.stackexchange.com

15
When is a matrix triangularisable?
math.stackexchange.com

15
Show that $\operatorname{Hom}_{R} (R,M) \cong M$
math.stackexchange.com

14
$\{\{\{∅\}\}\} ⊂ \{∅, \{∅\}\}$ True of False?
math.stackexchange.com

14
Short papers for undergraduate course on reading scholarly math
mathoverflow.net

13
Rules of Double Sums
math.stackexchange.com

13
What does $dx$ mean without $dy$?
math.stackexchange.com

13
In combinatorics, how can one verify that one has counted correctly?
math.stackexchange.com

12
Why does $\lim\limits_{x\to\infty}(x!)^{1/x}\neq 1?$
math.stackexchange.com

12
In how many ways the sum of 5 thrown dice is 25?
math.stackexchange.com

11
Minimal polynomial of direct sum
math.stackexchange.com

11
Do quotient rings have geometric meaning, or geometric intuition?
math.stackexchange.com

10
Find the Second coefficient of the series $\frac{1}{(1+x)^\frac{1}{4}} = \sum_{n=0}^\infty c_nx^n$
math.stackexchange.com

10
$f:\mathbb{R} \rightarrow \mathbb{R}$ with $f(0)=0$ and $|f'| \leq |f|$ then $f$ is constant
math.stackexchange.com

10
In how many ways the sum of 5 thrown dice is 25?
math.stackexchange.com

10
Does $\mathbb{Q}[x_1,x_2\ldots]$ embed inside of $\mathbb{R}$?
math.stackexchange.com

9
Do quotient rings have geometric meaning, or geometric intuition?
math.stackexchange.com

9
Radius of convergence for $\sum (xn)^n/n!$ without Stirling's approximation.
math.stackexchange.com

8
Is the Subcategory of Infinite Sets a Groupoid?
math.stackexchange.com

8
Questions about Spivak's proof that $\sqrt{2} + \sqrt[3]{2}$ is irrational
math.stackexchange.com

8
Galois, normal and separable extensions
math.stackexchange.com

8
Complete Ring of Fractions of $\mathbb{Z}_{n}$ for any $n$
math.stackexchange.com

8
$\Lambda = \varprojlim\Lambda_n$ (ring of symmetric functions)
math.stackexchange.com

8
What does a binomial coefficient with commas mean?
math.stackexchange.com

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