Why is this non-linear transformation not a Lorentz transformations? It does preserve $x^2 + y^2 + z^2 - c^2t^2 = x'^2 + y'^2 + z'^2 - c^2t'^2 $
21127
Interval preserving transformations are linear in special relativity
153205
Why is the $(\frac{1}{2},\frac{1}{2})$ representation of the Lorentz group realized as the vector space of Hermitian $2\times 2$ matrices?
53952
What does $\frac{1}{\sqrt{1 - \frac{v^2}{c^2}}}$ mean with respect to special relativity?
48192
Staggered Indices ($\Lambda^\mu{}_\nu$ vs. $\Lambda_\mu{}^\nu$) on Lorentz Transformations
78924
What is $c$ in the Lorentz force expression?
63896
Why is the (non-relativistic) stress tensor linear and symmetric?
154580
Is indefinite integration non-linear?
82046
prove that this double transpose $T''$ it's not injective.
53258
Why exactly does the time-reversal operator need to be anti-linear?
93121
How to prove there exists a linear transformation?
67641
Why should field operators satisfy the classical equations of motion?
126173
From irreducible representations of the Lorentz algebra to irreducible representations of the Lorentz group
153903
Symmetry condition for continuous coordinate transformations
119380
Clarifying question on meaning of derivative of a linear transformation
87125
Does action really have to be Lorentz-invariant in SR?
69199
How to find the continuous transformations which leave the action invariant?
116314
On-shell and off-shell transformations in Noether's theorem