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Top Questions
21
votes
What is this 2D division algebra?
abstract-algebra
division-algebras
asked Aug 25 '18 at 18:47
math.stackexchange.com
18
votes
In what sense (if any) is Action a physical observable?
quantum-mechanics
classical-mechanics
lagrangian-formalism
action
observables
asked Jul 23 '17 at 1:12
physics.stackexchange.com
13
votes
Electromagnetic field energy “paradox”
electromagnetism
energy
magnetic-fields
dipole
asked Oct 5 '17 at 4:32
physics.stackexchange.com
10
votes
Relationship between Spin(3), SU(2), unit quaternions, and SO(3)
group-theory
group-isomorphism
quaternions
asked Apr 4 '17 at 20:11
math.stackexchange.com
8
votes
“Non-pointer POD” type in C++
c++
types
asked Jan 24 '18 at 14:51
stackoverflow.com
7
votes
Do galaxies have a halo of neutrinos and cosmic microwave background?
cosmology
big-bang
dark-matter
galaxies
gravitational-collapse
asked Apr 21 '17 at 3:17
physics.stackexchange.com
5
votes
Current constraints on Dark Matter self-interaction from galactic profiles
gravity
cosmology
dark-matter
galaxies
weak-interaction
asked Apr 11 '17 at 19:43
physics.stackexchange.com
5
votes
How to see $\mathbf{E}\cdot\mathbf{B}$ is a total derivative?
homework-and-exercises
electromagnetism
lagrangian-formalism
field-theory
asked Oct 3 '17 at 2:19
physics.stackexchange.com
5
votes
Are there any decision complexity classes which have no “complete” subclass?
complexity-theory
reductions
asked Apr 12 '17 at 19:21
cs.stackexchange.com
5
votes
Existence of suitable pseudo-random number generators to derandomize BPP to P
complexity-theory
randomized-algorithms
pseudo-random-generators
oracle-machines
asked Apr 12 '17 at 22:45
cs.stackexchange.com
Top Answers
7
How to see $\mathbf{E}\cdot\mathbf{B}$ is a total derivative?
physics.stackexchange.com
5
Momentum in static electric field
physics.stackexchange.com
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