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Covariance
New post in Covariance
Bi-linear Property of Covariance.
August 18th, 2022
statistics
covariance
Off-diagonal terms in metric for 4D space-time
October 1st, 2022
covariance
metric-tensor
special-relativity
spacetime
tensor-calculus
How to find the intrinsic covariant derivative component?
January 2nd, 2020
differentiation
general-relativity
differential-geometry
covariance
Is kinetic energy a scalar?
February 4th, 2020
energy
invariants
covariance
Why do we need a metric to define gradient?
February 4th, 2021
covariance
differentiation
tensor-calculus
metric-tensor
differential-geometry
Trace of a Tensor
August 1st, 2022
tensor-calculus
covariance
trace
general-relativity
differential-geometry
General covariance from the equivalence principle
May 7th, 2020
equivalence-principle
general-relativity
covariance
Are there controversies surrounding the principle of general covariance in GR?
August 1st, 2022
general-relativity
covariance
The definition of transpose of Lorentz transformation (as a mixed tensor)
August 1st, 2022
linear-algebra
conventions
covariance
tensor-calculus
special-relativity
Why the generators of boosts transform like a vector under rotation?
May 10th, 2020
lie-algebra
representation-theory
covariance
special-relativity
vectors
Critique on tensor notation
August 1st, 2022
general-relativity
covariance
tensor-calculus
notation
linear-algebra
Why is the "canonical momentum" for the Dirac equation not defined in terms of the "gauge covariant derivative"?
April 13th, 2020
electromagnetism
operators
covariance
gauge-invariance
momentum
Levi Civita covariance and contravariance
August 1st, 2022
tensor-calculus
covariance
Einstein Summation Convention: One as Upper, One as Lower?
August 1st, 2022
covariance
tensor-calculus
notation
What is the reason to believe that the laws of physics are same in all frames of reference?
January 27th, 2020
observers
special-relativity
inertial-frames
covariance
How to show the spacetime interval is invariant in general?
December 25th, 2020
coordinate-systems
general-relativity
metric-tensor
tensor-calculus
covariance
Why should a (physical) principle be applicable to different systems in different positions in space and time?
December 17th, 2020
reference-frames
covariance
foundations
Understanding the difference between co- and contra-variant vectors
July 31st, 2020
covariance
special-relativity
vectors
tensor-calculus
Vectors as functions?
June 21st, 2021
differential-geometry
tensor-calculus
vectors
general-relativity
covariance
Coordinate Transformation of Scalar Fields in QFT
July 2nd, 2020
coordinate-systems
covariance
differential-geometry
field-theory
tensor-calculus
Is Young's Modulus a Lorentz Scalar?
July 6th, 2020
special-relativity
covariance
solid-mechanics
What does the statement "the laws of physics are invariant" mean?
April 11th, 2021
special-relativity
reference-frames
inertial-frames
symmetry
covariance
Covariant vs contravariant vectors
August 1st, 2022
differential-geometry
metric-tensor
tensor-calculus
vectors
covariance
Invariance of action $\Rightarrow$ covariance of field equations?
February 23rd, 2022
invariants
lagrangian-formalism
symmetry
action
covariance
Difference between symmetry and invariance
August 1st, 2022
definition
covariance
invariants
symmetry
Definitions and usage of Covariant, Form-invariant & Invariant?
March 14th, 2020
invariants
covariance
definition
symmetry
How to understand the definition of vector and tensor?
July 15th, 2021
covariance
coordinate-systems
reference-frames
vectors
tensor-calculus
What exactly does it mean for a scalar function to be Lorentz invariant?
March 2nd, 2020
special-relativity
lorentz-symmetry
covariance
invariants
tensor-calculus
Are diffeomorphisms a proper subgroup of conformal transformations?
March 19th, 2020
symmetry
conformal-field-theory
covariance
diffeomorphism-invariance
differential-geometry
What is meant when saying "the partial derivative operator $\partial/\partial x^\mu$ is a covariant vector"?
September 29th, 2021
general-relativity
differential-geometry
tensor-calculus
covariance
vectors
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