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All questions asked by Richard Yan

List all solved & unsolved questions asked by Richard Yan

MacBook Pro wildly oscillating CPU frequency under load

0   Ask Different Asked on 12/21/2020

cpu  hardware  macbook pro  macos 

Unusual ways of summing well-known series -- for example, this unusual summation of the geometric series

2   Mathematics Asked on 11/06/2021

alternative proof  calculus  real analysis  sequences and series  summation 

What am I misunderstanding about this isomorphism?

1   Mathematics Asked on 11/06/2021

algebraic topology  fundamental groups  simplicial complex 

How to compute the series: $sum_{n=0}^{infty} (-1)^{n-1}binom{1/2}{n}$

1   Mathematics Asked on 11/06/2021

binomial coefficients  sequences and series 

Removing parameter from set of orthogonal trajectories

1   Mathematics Asked on 11/06/2021

ordinary differential equations 

How to solve quadratic equations with three variable?

0   Mathematics Asked on 11/06/2021

quadratic forms  quadratic programming  quadratics 

A variant version of Euler's phi function

2   Mathematics Asked on 11/06/2021

number theory  totient function 

If $Tcolon X to Y$ is such that $T^*colon Y^* to Y^*$, what does this imply about $T$?

1   Mathematics Asked on 11/06/2021

adjoint operators  banach spaces  functional analysis  operator theory 

How do I prove a half open interval is a sigma algebra?

0   Mathematics Asked on 11/06/2021

measure theory  probability theory 

Bound on truncated trigonometric polynomial

2   Mathematics Asked on 11/06/2021

examples counterexamples  trigonometric series  trigonometry  upper lower bounds 

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