Morgan Rogers's user avatar
Morgan Rogers's user avatar
Morgan Rogers's user avatar
Morgan Rogers
  • Member for 7 years, 7 months
  • Last seen this week
  • Paris, France
8 votes

Examples and definition of cocompact objects

5 votes
Accepted

When $\lfloor{ab}\rfloor = \lfloor{a}\rfloor\lfloor{b}\rfloor$

4 votes

Geometric surjections are not stable under pullback

4 votes

Not all Monads are Idempotent, a Cautionary Tale on Natural Transformations

3 votes
Accepted

Is there a notion of "normal subcategory" analgous to the notion of normal subgroup?

3 votes
Accepted

Infinite core graphs

2 votes

Definition of group action, antihomomorphism?

2 votes

Is there a notion of a transversal of subobjects?

2 votes
Accepted

Meaning of $Ax \leq b$

2 votes
Accepted

Proof of equivalence between limit of a vector field and limit of a scalar field

2 votes
Accepted

Combinatorics problem involving binomial coefficient

1 vote
Accepted

Is there any measure of "randomly defined" functions?

1 vote
Accepted

10000 people are invited to an event. What is the minimum amount of chairs needed to promise 0.95 probability that all people will get a seat?

1 vote
Accepted

Prove that any number greater that one can be uniquely written in arbitrary base.

1 vote

Why we can add an element on both sides like this?

1 vote
Accepted

How can we construct the incenter of a triangle using a compass alone?

1 vote

Johnstone, Topos Theory Exercise 7.3

1 vote
Accepted

Are inverse images of separated presheaves separated?

1 vote

Proving that profinite spaces form a site

1 vote

Nice definition of Grothendieck topology?

1 vote
Accepted

Interchange map in simplicial sets is a monomorphism?

1 vote

What is the partition of an empty set?

0 votes

Surjection Vs Surjective geometric morphism

0 votes
Accepted

Modelling independent unfair coin flips with unknown parameter

0 votes

'Directionality' of Vectors

0 votes

Let $A_1, A_2,\dots$ be a sequence of disjoint, finite subsets of $\mathbb{N}$. How can $\bigcup_{n=1}^\infty A_n$ be either finite or infinite?