Does the Unruh effect exist?

It is shown that quantization on the Fulling modes presupposes that the field vanishes on the spatial boundaries of the Rindler manifold. For this reason, Rindler space is physically unrelated...

09 April 2018 551 12 View

Why the modern mathematics uses ancient representation about countable infinity? Please say what is your opinion.

Why the modern mathematics uses ancient representation about countable infinity such that: there is a set which intuitively has infinitely many elements 0,{0},{{0}},...etc.

01 April 2016 2,630 10 View

Was Joseph Polchinski wrong?

06 March 2016 9,631 28 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

What is the paradoxical effect of VINASSE in terms of low pH (<4) and high EC (>50dS/m)? What is its impact on soil properties and crop growth?

What is the paradoxical effect of VINASSE in terms of low pH (50dS/m)? What is its impact on soil properties and crop growth?

15 February 2021 3,142 6 View

Anyone know how to contact Raymond Streater?

He is emeritus in the mathematics department of King's College London. The email address listed on their web site is not functional. The department has no way of physically contacting him due to...

15 February 2021 5,529 1 View

Wave velocity and rock density paradox?

Practically it is known that seismic velocity increases as rock density increases, why then does the wave velocity equation involving elastic moduli and density indicate that velocity is inversely...

09 February 2021 1,843 3 View

Is there any publication about the effect of basketball and volleyball on body height?

Many people believe that some stretching sports with vertical jump such as basketball and volleyball can increase the body height. On the other hand, others do not agree with this argument. The...

02 February 2021 281 6 View

Qiime2- No reads passed the filter. How to set the trunc value?

Hi, I am working on some 16S sequencing data, and seems some of them are low quality. I am not sure how to set the trunc value in dada2. qiime dada2 denoise-paired \ --i-demultiplexed-seqs...

30 January 2021 6,213 3 View

I am getting an error "Too many input arguments" in watertank example while linearizing it on trim point?

I am just solving the MATLAB built-in example "watertank". I want to linearize the system on a certain operating point. Although I am following the exact steps as given in the MATLAB help section...

14 December 2020 8,139 6 View

No title

23 November 2020 7,077 3 View

Beta-binomial distributions using BRMS in R - How should I use the custom_family argument?

I'm trying to compute a beta-binomial model using the R package brms. However, beta-binomial distributions are not native to this package, so I'm trying to use the custom_family argument, to...

10 November 2020 9,265 3 View

A hotel's success is not measured by its occupancy?

It is a topic for a class debate where my group have to find arguments to defend that it is not only depending on its occupancy. So I am here to ask if some of you have some insights about this...

21 September 2020 874 9 View