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15
71
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Calculus - Showing that Min does not exists

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#calculus #limits #supremum-and-infimum #upper-lower-bounds
236
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To show that a sequence is bounded above by $3$.

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#calculus #sequences-and-series #recurrence-relations #upper-lower-bounds
125
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On a conjectured upper bound for $k=\nu_q(N)$, if $N=q^k n^2$ is an odd perfect number with special prime $q$

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#number-theory #upper-lower-bounds #conjectures #arithmetic-functions #perfect-numbers
95
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It's possible to rearrange each column of a matrix to satisfy a certain condition. (APMC 1984)

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#combinatorics #matrices #permutations #contest-math #upper-lower-bounds
171
Views

Lower bound on trace of product of matrices?

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#linear-algebra #matrices #inequality #upper-lower-bounds #trace
146
Views

Percentiles of sums of random variables

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#upper-lower-bounds #percentile
26
Views

How to make sure I have the least upper bound of a recursive relation?

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#recurrence-relations #computational-complexity #upper-lower-bounds
65
Views

Why $\frac{\sqrt{x}-1}{\sqrt{x}+1} \leq \exp{\left(-\frac{C}{\sqrt{x}}\right)}$?

Published on
#inequality #upper-lower-bounds
44
Views

Given a unit vector $x\in\mathbb R^d$, what is the worst possible within-cluster sum of squares for 2-means clustering?

Published on
#upper-lower-bounds #means #clustering
36
Views

Wrong defined/boundless $g \rightarrow\sum_{n = 1}^\infty\frac{g(\frac1n)}{2^n}$

Published on
#functional-analysis #normed-spaces #upper-lower-bounds
78
Views

Bound on non-negative rank

Published on
#linear-algebra #matrices #matrix-decomposition #matrix-rank #upper-lower-bounds
77
Views

Show that the sequence $a_n = a_{n-1}(a_{n-1} + \frac{1}{n})$ is unbounded when $a_1 = 1$

Published on
#real-analysis #sequences-and-series #convergence-divergence #upper-lower-bounds
64
Views

How to show that a continuous function is bounded on an interval

Published on
#calculus #continuity #upper-lower-bounds
252
Views

Checking monotonicity of a sequence with derivative of its function

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#sequences-and-series #derivatives #upper-lower-bounds #monotone-functions
47
Views

Variance of sum of deviations

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#probability #statistics #variance #upper-lower-bounds #means

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