Viktor Vladimir Chistyakov

5 Questions 17 Answers 0 Followers

Questions related from Viktor Vladimir Chistyakov

In what way we may calculate principal components for a set of 500+-dimensional vectors?

To diagonalize a covariance matrix 500+x500+ is extremely difficult, almost impossible. To maximize a mean squared projection of the vectors on some direction a=(a1,a2,.....a500+) You are to solve...

12 March 2022 3,945 4 View

Is it paradoxial?

The magnetic induction of round curl with current J depends on radial variable r as B := (R*J/(2*Pi))*mu0*ln((sqrt(r)+sqrt(R))/(-sqrt(r)+sqrt(R)))/((R+r)*sqrt(R*r)) where R is the ring radius. The...

11 December 2018 1,808 1 View

What is a relation between relaxation time and mean free path for ideal gas?

These two values should be interconnected throufg integral of collisions. But I can not find a clear formula.

03 November 2018 3,717 1 View

Mechanical effort depending on acceleration - any thoughts?

In Newtons II law the force F acting on a body may depend on time, position and velocity but not acceleration. Otherwise the parallelogram principle doesn't operate for partial accelerations. And...

11 August 2014 2,161 8 View

How to prove a hypothesis about collinearity of two multidimensional vectors A=(A1,A2,..An) and B=(B1,B2..BN)?

When minimizing by real number q a value of lost function L=(A-qB)^2/A^2 with the A as the reference vector we receive Lmin=(1-(AB)^2/A2*B^2) where X^2=X1^2+...Xn^2, XY=X1Y1+...XnYn. Physical...

01 January 1970 1,146 3 View