ante.ceperic
Reputation
1,144
Top tag
Next privilege 2,000 Rep.
5 18
Impact
~11k people reached

### Questions (55)

 41 What if $\pi$ was an algebraic number? (significance of algebraic numbers) 19 Is there a geometric idea behind Sylow's theorems? 11 How to prove that $\sum_{n \in \mathbb{N} } | \frac{\sin( n)}{n} |$ diverges? 10 How inequalities are made 10 Injection and surjection - origin of words

### Reputation (1,144)

 +5 What kind of matrices are non-diagonalizable? +5 When does the $L_1$ convergence imply almost everywhere convergence? +5 Confusion about Lie groups in Fulton & Harris +5 Injection and surjection - origin of words

 3 Prove that $\sum_{k=1}^{n}k\binom{n}{k}=n\cdot2^{n-1}$ 2 What does this statement mean? Pertaining to Definition of Lipschitz continuous function 1 How to prove inequality $\frac{a}{a+bc}+\frac{b}{b+cd}+\frac{c}{c+da}+\frac{d}{d+ab}\ge 2$ 0 How prove that $3(a^3+b^3)+1-3c\ge \frac{a^2+b^2-c^2+1-4c}{a+b}$? 0 Stirling number

### Tags (60)

 3 discrete-mathematics × 2 0 soft-question × 14 3 binomial-coefficients 0 group-theory × 7 2 differential-equations 0 linear-algebra × 5 1 inequality × 7 0 representation-theory × 5 0 abstract-algebra × 15 0 lie-algebras × 4

### Accounts (12)

 Mathematics 1,144 rep 518 Ask Ubuntu 155 rep 127 Stack Overflow 142 rep 3 French Language 118 rep 3 MathOverflow 111 rep 2