Mike Pierce
  • Member for 7 years, 4 months
  • Last seen this week
8 answers
63 votes
5k views
27 bookmarks
Graphs for which a calculus student can reasonably compute the arclength
3 answers
36 votes
3k views
15 bookmarks
When you inscribe a triangle in a circle in a triangle in a circle in a triangle ...
5 answers
30 votes
1k views
10 bookmarks
How do you find Pythagorean triples that approximately correspond to a right triangle with a given angle?
10 answers
27 votes
5k views
15 bookmarks
Why worry about commutativity but not associativity in The Fundamental Theorem of Arithmetic?
3 answers
16 votes
2k views
13 bookmarks
"Drawable" Examples of Vector Bundles
2 answers
11 votes
980 views
5 bookmarks
Is a trigonometric function applied to a rational multiple of $\pi$ always algebraic?
2 answers
10 votes
485 views
5 bookmarks
Exercises to help a student become accustomed to Sweedler notation
1 answers
9 votes
205 views
8 bookmarks
Does inscribing a circle, then a triangle, then ..., inside of an initial triangle telescope to some "center" of that triangle?
1 answers
9 votes
436 views
7 bookmarks
Integration technique of writing $\int_0^{\infty}$ as $\int_0^1 + \int_1^{\infty}$ and using the substitution $\frac{1}{x} \leftrightarrow u$
1 answers
9 votes
311 views
1 bookmarks
Is there a natural way to regard a valued quiver as a category?
3 answers
9 votes
364 views
2 bookmarks
Over a commutative unital ring, does $\det A = 0$ imply that $A\mathbf{x} = 0$ has a non-zero solution?
2 answers
9 votes
162 views
3 bookmarks
Reference for Kaplansky's proof that in $\mathbb{C}[G]$, $ab=1$ implies $ba=1$
1 answers
8 votes
12k views
7 bookmarks
Showing a function has exactly one zero with IVT and Rolle's Theorem
1 answers
8 votes
716 views
4 bookmarks
Multiple choice exam where no two consecutive answers are the same (2)
2 answers
7 votes
333 views
Significance of adjoint relationship with Ext instead of Hom
1 answers
7 votes
110 views
Looking for a Resource to Identify/Name a Given Graph
1 answers
6 votes
133 views
For which categories is its Yoneda embedding essentially surjective?
3 answers
6 votes
340 views
How much longer does it take to paint a similar box with $5$ times more volume?
2 answers
6 votes
368 views
1 bookmarks
Peirce decomposition of a ring: must the ideal generators be idempotent in characteristic 2?
1 answers
5 votes
182 views
3 bookmarks
What's the minimum number of keystrokes needed to type n asterisks?
1 answers
5 votes
120 views
How can we think of the codomain (range) of a probability density function?
1 answers
5 votes
46 views
1 bookmarks
Is there meaning in the minimal instances of a variable you need to write a rational expression?
0 answers
5 votes
115 views
What are are some illustrative (non-)examples of proper morphisms?
1 answers
5 votes
150 views
1 bookmarks
What's the term to describe a morphism that isn't a composite of morphisms?
2 answers
5 votes
310 views
1 bookmarks
A finitely-generated ring over the integers modulo a max ideal is necessarily a finite field
2 answers
5 votes
1k views
4 bookmarks
Example of a Tensor Product of Modules with Non-Decomposable Elements
2 answers
4 votes
258 views
1 bookmarks
Is $\sqrt{7} \in \mathbb{Q}\left(\sqrt{3+\sqrt{2}}\right)\;$?
2 answers
4 votes
197 views
1 bookmarks
What are the sine and cosine of dyadic angles?
2 answers
4 votes
82 views
Can you describe all the ways to "un-localize" a ring?
3 answers
4 votes
2k views
4 bookmarks
The support of a sheaf is not necessarily closed