183 reputation
13
bio website twitter.com/akater
location Moscow, Russia
age 27
visits member for 3 years, 2 months
seen Oct 15 '13 at 19:54

Oct
15
awarded  Enthusiast
Aug
12
asked Why must the field equations be differential?
Jul
31
awarded  Scholar
Jul
31
accepted The role of metric in the Wave Equation
Jul
29
comment The role of metric in the Wave Equation
I was talking about an abstract wave equations, not Maxwell equations. However, this remark is very interesting. I have to to think about it. Do you mean that physically meaningful scalar fields sometimes lose their invariant properties in anisotropic medium, and one is then forced to deal with vector fields?
Jul
29
revised The role of metric in the Wave Equation
Indices in tensor components are deleted; the formulation was intended to be as coordinate-free as possible.
Jul
28
comment The role of metric in the Wave Equation
@whoplisp Two equations in the original post are identical. It is an equation for time-dependent scalar field u. What made you think of equation for vector field?
Jul
28
awarded  Student
Jul
28
awarded  Editor
Jul
28
revised The role of metric in the Wave Equation
added 2 characters in body
Jul
28
asked The role of metric in the Wave Equation