Question

Uniqueness of Least Upper Bounds

score 366 · Answer 1 · 2022-02-09 02:19:29

366

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Uniqueness of Least Upper Bounds

Published on 09 Feb 2022 - 2:19

score 65 · Answer 2 · 2022-02-10 01:21:54

65

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Is the statement true: Set "Omega" which is an empty set = { } is upper bounded, yet does not contain Supremum (least upper bound).

Published on 10 Feb 2022 - 1:21

score 166 · Answer 3 · 2022-02-10 17:00:45

166

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Minimum of sum of reciprocals of positive real numbers with inequality costraint

Published on 10 Feb 2022 - 17:00

score 44 · Answer 4 · 2022-02-13 02:32:50

44

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Proving $\exists \alpha$ s.t. quadratic $f(x) \geq \alpha \; \forall x \in \Bbb R^n \iff b^T \in$ Range$(A)$

Published on 13 Feb 2022 - 2:32

score 38 · Answer 5 · 2026-03-26 17:35:03

38

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Group of perfect Hamming codes

Published on 26 Mar 2026 - 17:35

score 181 · Answer 6 · 2022-02-15 14:14:29

181

Views

Lower and upper bound for trigonometric functions

Published on 15 Feb 2022 - 14:14

score 202 · Answer 7 · 2026-03-27 15:20:08

202

Views

If there are $k_1, k_2, \dots, k_n$ divisions by $2$ in a Collatz cycle, then $k_1 + \dots + k_n \geq n$, but can we get a greater lower bound?

Published on 27 Mar 2026 - 15:20

score 262 · Answer 8 · 2022-02-16 09:11:20

262

Views

Lower bound for the function $f(x) = x\sin x$

Published on 16 Feb 2022 - 9:11

score 83 · Answer 9 · 2022-02-16 17:21:13

83

Views

Asymptotic bound on the expected value with a bound on the tail probability

Published on 16 Feb 2022 - 17:21

score 64 · Answer 10 · 2022-02-22 03:30:04

64

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Which is name of this theorem? Real valued f(x) continuous & compact-supported --> f(x) bounded

Published on 22 Feb 2022 - 3:30

score 26 · Answer 11 · 2022-02-22 12:22:06

$M_{n+1}=\{\frac{1}{2}(a+b):a,b\in M_n\}\cup\{\frac {1}{2}ab:a,b\in M_n\}, n\in\mathbb {N_0}$. Find bounds of ${M_n}$ independent from $n$

score 52 · Answer 12 · 2022-02-23 19:31:32

52

Views

Is there any upper-bound function such as $\frac{k}{x}$ for monotonically decreasing functions?

Published on 23 Feb 2022 - 19:31

score 137 · Answer 13 · 2026-02-23 06:24:26

137

Views

Is the rate of change of Finite-Duration Solutions always bounded?

Published on 23 Feb 2026 - 6:24

score 210 · Answer 14 · 2022-02-27 01:07:16

210

Views

Lower bound for $\sqrt{x} - \sqrt{x-1} $

Published on 27 Feb 2022 - 1:07

score 162 · Answer 15 · 2022-02-27 16:29:36

162

Views

Bounding of $\frac{x-y}{x+y}$ over $x \in [-5,-3]$ and $y \in [2,4]$

Published on 27 Feb 2022 - 16:29

List Question

Uniqueness of Least Upper Bounds

Is the statement true: Set "Omega" which is an empty set = { } is upper bounded, yet does not contain Supremum (least upper bound).

Minimum of sum of reciprocals of positive real numbers with inequality costraint

Proving $\exists \alpha$ s.t. quadratic $f(x) \geq \alpha \; \forall x \in \Bbb R^n \iff b^T \in$ Range$(A)$

Group of perfect Hamming codes

Lower and upper bound for trigonometric functions

If there are $k_1, k_2, \dots, k_n$ divisions by $2$ in a Collatz cycle, then $k_1 + \dots + k_n \geq n$, but can we get a greater lower bound?

Lower bound for the function $f(x) = x\sin x$

Asymptotic bound on the expected value with a bound on the tail probability

Which is name of this theorem? Real valued f(x) continuous & compact-supported --> f(x) bounded

$M_{n+1}=\{\frac{1}{2}(a+b):a,b\in M_n\}\cup\{\frac {1}{2}ab:a,b\in M_n\}, n\in\mathbb {N_0}$. Find bounds of ${M_n}$ independent from $n$

Is there any upper-bound function such as $\frac{k}{x}$ for monotonically decreasing functions?

Is the rate of change of Finite-Duration Solutions always bounded?

Lower bound for $\sqrt{x} - \sqrt{x-1} $

Bounding of $\frac{x-y}{x+y}$ over $x \in [-5,-3]$ and $y \in [2,4]$

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