What is the exact connection between electrons and quaternions?

It seems to me that both remember the parity of the number of revolutions.

07 August 2015 6,862 2 View

Do you know an exact geometrical meaning of the quaternionic versors i j k?

06 July 2015 5,896 21 View

Euclid is a good or bad thing for mathematics? And for society?

i know the point of view of Archimedes, Descartes, Grassmann, Heaviside, De Finetti, Jesuits, but I would like to know your point of view.

01 February 2015 8,726 7 View

What is the general concept of space according to the views of Grothendieck?

Many say that Grothendieck has revolutionized the concept of space, but few explain in sufficient detail what this revolution is. I would like to know your position in this regard.

01 February 2015 8,445 6 View

Are there non trivial good books on the relationship between mathematics and music?

I am interested in books, articles, software, automatic composition, etc. etc..

31 December 2014 2,706 13 View

Is it new, the position expressed in the article with respect to the dialectic between absolute and relative truth?

K

31 December 2014 8,749 0 View

Colombeau's new generalized functions?

What is the simplest definition, if it exists, of Colombeau's new generalized functions?

11 December 2014 3,548 6 View

What is the best notion of proof for linear logics in the sense of closed categories?

08 September 2014 5,425 7 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Is there a powerful system for the security of the systems distributed on IoT systems?

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View