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Obliv
  • Member for 8 years, 10 months
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7 votes
2 answers
10k views

How is the kernel of a group action defined?

5 votes
2 answers
3k views

how to prove $G$ is an abelian group under $*$ (called the real numbers mod 1)

2 votes
2 answers
475 views

How to determine when this is a well-defined homomorphism between cyclic groups

2 votes
1 answer
172 views

What is an equivalence class of an equivalence relation?

1 vote
1 answer
190 views

How to integrate hydrostatic force on a two dimensional shape?

1 vote
3 answers
2k views

How to prove that the g.c.d is equal to the prime factorization raised to the minimum of two powers

1 vote
2 answers
391 views

Proving the set of prime numbers in $\mathbb{Z+}$ is infinite

1 vote
1 answer
941 views

How to prove the group of roots of unity in $\mathbb{C}$ is a group

1 vote
1 answer
530 views

Help understanding that the stabilizer is the normalizer of this subset of this group

1 vote
3 answers
1k views

Is $\mathbb{Z}/n\mathbb{Z}$ a group under multiplication when $n$ is prime?

0 votes
1 answer
517 views

Differential equations that have non-sinusoidal periodic solutions

0 votes
1 answer
98 views

Proving the element of a symmetry group $\sigma^i \in S_n$ is of order $n$ and length $n$ only when $(n,i) = 1$

0 votes
1 answer
75 views

Help showing this is an element of $(\mathbb{Z}/p^n\mathbb{Z})^{\times}$

0 votes
1 answer
27 views

General expanded form for $(a+\frac{b}{c})^d$

0 votes
1 answer
314 views

$\mathcal{L}\left\{t \int_0^t \sin \tau d \tau \right\}$

0 votes
2 answers
102 views

$f(t) = te^t + \int_0^t \tau f(t-\tau)d\tau$

0 votes
0 answers
25 views

Finding Laplace transform of piecewise function $f(t)$

0 votes
1 answer
570 views

Verifying multiplicative inverses of modulo n are the elements that are relatively prime to n

0 votes
1 answer
3k views

How to prove associative law for groups

0 votes
2 answers
36 views

Proving that a common divisor of two variables is also a divisor of the sum of the two variables

0 votes
0 answers
280 views

Proving the Well Ordering Property of $\mathbb{Z}$ by induction and prove the minimal element is unique.

0 votes
1 answer
4k views

What is the general integration of acceleration with respect to position?

0 votes
1 answer
37 views

How is this process defined? [closed]

0 votes
2 answers
760 views

Why can't a strictly injective function have a right inverse?