Raducu Mihai's user avatar
Raducu Mihai's user avatar
Raducu Mihai's user avatar
Raducu Mihai
  • Member for 8 years, 1 month
  • Last seen more than a month ago
5 votes
2 answers
1k views

The Fundamental Theorem of Symmetric Polynomials

5 votes
4 answers
30k views

Find the image of a linear transformation.

4 votes
3 answers
2k views

Prove that two sets are the same

4 votes
2 answers
881 views

Show that sequence (1,1,2,2,3,3,…k,k) is graphic for every k ∈ N

3 votes
1 answer
3k views

Proof for Steinitz exchange lemma

3 votes
3 answers
313 views

Isomorphic graphs

3 votes
5 answers
313 views

Prove that the nth derivative of a function has two real solutions

3 votes
1 answer
1k views

Minimal polynomial of a matrix does not check Hamilton-Cayley theorem

2 votes
2 answers
291 views

Cantor's theorem about countable sets

2 votes
1 answer
123 views

Factor the following polynomial over $\mathbb{Z} [ X ] $

2 votes
3 answers
91 views

Continuity of $x^2$ function

2 votes
1 answer
64 views

Is the following polynomial irreductible over $\mathbb{Z}[X]$?

2 votes
1 answer
36 views

Decide if a function is Riemann Integrable

2 votes
1 answer
1k views

Prove that two sets are equal

1 vote
1 answer
31 views

Calculate a line integral

1 vote
1 answer
107 views

Find the partial derivative of a composite function

1 vote
2 answers
77 views

Find the region for double integrals

1 vote
0 answers
38 views

Jordan Measurable set

1 vote
3 answers
60 views

Study the continuity of a function

1 vote
1 answer
37 views

Prove that a sequence of functions is pointwise convergent

1 vote
2 answers
84 views

Find $x_1^3+x_2^3+x_3^3$ for a degree 3 polynomial.

1 vote
3 answers
272 views

Find roots of 3 degree polynomial such that they are in geometric progression

1 vote
1 answer
50 views

Projectile motion with Cauchy problem

1 vote
2 answers
46 views

Study the convergence of the series [closed]

1 vote
2 answers
3k views

Find the image and preimage of some functions

1 vote
1 answer
943 views

Prove whether or not a subgroup is normal in the dihedral group $D_4$

1 vote
2 answers
51 views

Find the determinant of A $\in \mathbb{M}_n$

1 vote
3 answers
225 views

Normal subgroup test

1 vote
2 answers
658 views

Find the supremum and infimum

1 vote
0 answers
68 views

Translate from logical expression to regular expression