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Mark's user avatar
Mark's user avatar
Mark
  • Member for 9 years
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11 votes
Accepted

Dual basis with respect to bilinear form

8 votes
Accepted

Set theory: cardinality of a subset of a finite set.

6 votes

An open subset of an irreducible set is dense.

4 votes
Accepted

How many unique numbers can be obtained from multiplying two natural numbers less than $N$?

4 votes
Accepted

How to abbreviate $a_0=a_1=\cdots=a_n$?

3 votes

Picking Numbers for a Digit

3 votes
Accepted

What are the bounds (upper and lower) for $|A+A|$?

2 votes

solution of infinite series

2 votes

Probability that exactly k of N people matched their hats [SRoss P63 Ex 2g]

2 votes

Why does the results of Lagrangian and substitution differ?

2 votes

Uncertain about Uniformizing Elements of Elliptic Curves.

2 votes

On discriminants and nature of an equation's roots?

2 votes

A sequence $(1,2,3,4,5,6)$ while rolling a die

2 votes
Accepted

In how many ways can $5$ identical balls be placed in the cells of a $3 \times 3$ grid such that each row contains at least one ball?

2 votes
Accepted

Special Power Set that does not contain "mixing" of subsets.

1 vote

off by 1 lottery probability

1 vote
Accepted

Probability Conundrum -- Spot The Error edition

1 vote

Number of Distinct ideals of $Z_{60}?$

1 vote

Prove $\{12a+25b:a,b\in\mathbb{Z}\}=\mathbb{Z}$

1 vote

Exercises Involving Torsion and Abelian Groups

1 vote

marble probabilities

1 vote

Pythagorean triples generation Euclid's proof

1 vote
Accepted

How to find the expectation of $\sqrt{x}$ and others like it

1 vote
Accepted

Equations with exponents

1 vote

How to calculate square root or cube root?

1 vote

Unique Combinations

1 vote

cyclic subgroups and generators

1 vote

Show that A is an open subset of M

0 votes
Accepted

Solution to probability problems

0 votes

Simple combinatorics help including boxes and objects