User davidlowryduda - Mathematics Stack Exchange

davidlowryduda

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Member for 11 years, 11 months
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davidlowryduda.com
Boston, MA, USA

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161

Why is the inverse of a sum of matrices not the sum of their inverses?

Feb 17, 2015

119

What are the numbers before and after the decimal point referred to in mathematics?

Sep 13, 2011

111

Why is it hard to prove whether $\pi+e$ is an irrational number?

Jun 17, 2012

100

The expected payoff of a dice game

Aug 6, 2012

68

Is it unheard of to say that you like math but hate proofs?

Apr 9, 2012

Questions

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38

Using the Brun Sieve to show very weak approximation to twin prime conjecture

Oct 2, 2013

17

closed form of $\sum \frac{1}{z^3 - n^3}$

Nov 3, 2011

15

$\frac{16}{27} \left( \frac a{b+c} + \frac b{a+c} +\frac c{a+b} \right) ^3 + \left( \frac{abc}{(a+b)(b+c)(a+c)}\right)^{\frac{1}{3}} \geq \frac52$

Jan 31, 2012

15

Is there a 'far' irrational number?

Feb 14, 2012

14

Classifying Unital Commutative Rings of Order $p^2$

Feb 15, 2012

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calculus

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number-theory

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elementary-number-theory

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real-analysis

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189

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sequences-and-series

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139

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Reputation

top 0.21% overall

+10

Why $ \int^{+\infty}_{-\infty} x \, dx \neq 0 $

+10

Conditions for integrability

+10

Trigonometic Substitution VS Hyperbolic substitution

+10

$\int\frac{\sin\left(x\right)}{\cos\left(x\right)}\,\mathrm{d}x$ by substitution

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number-theory

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Sheriff

Aug 7, 2013
calculus

Nov 1, 2018

159

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elementary-number-theory

Nov 13, 2015
sequences-and-series

Sep 11, 2017
integration

Apr 28, 2021

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analytic-number-theory

Jul 1, 2015
riemann-zeta

Jan 17, 2017
definition

Jul 11, 2018

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