Question

Prove that $\hat{h}_1(S) = \hat{h}_2(S)$ in propositional logic.

score 65 · Answer 1 · 2026-04-12 18:51:09

65

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Prove that $\hat{h}_1(S) = \hat{h}_2(S)$ in propositional logic.

Published on 12 Apr 2026 - 18:51

score 95 · Answer 2 · 2026-04-17 04:32:35

95

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Prove that the only solution of $|x| + \left(y-1\right)^2 = 0$ is $x=0$ and $y=1$.

Published on 17 Apr 2026 - 4:32

score 77 · Answer 3 · 2026-04-16 23:19:42

77

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Prove that $f(x) = \frac{\sin(x+\alpha)}{\sin(x+\beta)}$ is monotonic in any interval of its domain

Published on 16 Apr 2026 - 23:19

score 253 · Answer 4 · 2026-04-14 03:34:30

253

Views

Does the following set of polynomials non-negative on the interval $[0,1]^2$ positively span all non-negative polynomials on the interval?

Published on 14 Apr 2026 - 3:34

score 536 · Answer 5 · 2026-04-13 20:13:06

536

Views

Proving continuity when partial derivatives are bounded on open set

Published on 13 Apr 2026 - 20:13

score 51 · Answer 6 · 2026-04-11 16:04:04

51

Views

How should I complete this argument?

Published on 11 Apr 2026 - 16:04

score 211 · Answer 7 · 2026-04-15 05:42:31

211

Views

Proving this function is a local homeomorphism. Is my proof correct?

Published on 15 Apr 2026 - 5:42

score 559 · Answer 8 · 2026-04-15 17:36:32

559

Views

$x_n \to x \in \mathbb{R}$ and $y_n \to 0 $. What about $\frac{x_n}{y_n}$?

Published on 15 Apr 2026 - 17:36

score 722 · Answer 9 · 2026-04-13 04:15:43

722

Views

Finding all possible remainders of perfect squares mod $n$, $n\in \mathbb{Z_+}$

Published on 13 Apr 2026 - 4:15

score 364 · Answer 10 · 2026-04-11 19:16:41

364

Views

Examples of well-written scientific papers in mathematics

Published on 11 Apr 2026 - 19:16

score 306 · Answer 11 · 2026-04-15 15:42:43

306

Views

Basic theorem from vector analysis - Condition that 4 points $A,B,C,D$ no three of which are collinear, will lie in a plane

Published on 15 Apr 2026 - 15:42

score 242 · Answer 12 · 2026-04-10 11:09:16

242

Views

How to apply the axioms in set theory?

Published on 10 Apr 2026 - 11:09

score 124 · Answer 13 · 2026-04-12 02:45:52

124

Views

What is proving theorems like at the professional level?

Published on 12 Apr 2026 - 2:45

score 899 · Answer 14 · 2026-04-15 16:41:00

899

Views

Is this proof of $x<y \iff x^n < y^n$ correct?

Published on 15 Apr 2026 - 16:41

score 171 · Answer 15 · 2026-04-15 01:46:34

171

Views

Prove the following statements: Linear algebra (Vector spaces)

Published on 15 Apr 2026 - 1:46

List Question

Prove that $\hat{h}_1(S) = \hat{h}_2(S)$ in propositional logic.

Prove that the only solution of $|x| + \left(y-1\right)^2 = 0$ is $x=0$ and $y=1$.

Prove that $f(x) = \frac{\sin(x+\alpha)}{\sin(x+\beta)}$ is monotonic in any interval of its domain

Does the following set of polynomials non-negative on the interval $[0,1]^2$ positively span all non-negative polynomials on the interval?

Proving continuity when partial derivatives are bounded on open set

How should I complete this argument?

Proving this function is a local homeomorphism. Is my proof correct?

$x_n \to x \in \mathbb{R}$ and $y_n \to 0 $. What about $\frac{x_n}{y_n}$?

Finding all possible remainders of perfect squares mod $n$, $n\in \mathbb{Z_+}$

Examples of well-written scientific papers in mathematics

Basic theorem from vector analysis - Condition that 4 points $A,B,C,D$ no three of which are collinear, will lie in a plane

How to apply the axioms in set theory?

What is proving theorems like at the professional level?

Is this proof of $x<y \iff x^n < y^n$ correct?

Prove the following statements: Linear algebra (Vector spaces)

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