No error.
Lorentz'tranformations describe the universe directly visible by the two
observers O and O'.
To and To' designates THE MOMENT where the events occurred visible in
LOCAL repository.
Be careful here : To and To' are negative. It is very important not to
make a mistake with signs.
t = t'= 0 designate the watches when they are triggered.
When observer O triggers his watch, he sees a universe (x, y, z, t=0).
In his frame of reference, at this moment the observer O' who crosses O
sees an absolutely identical universe, but very spatially distorted. No
have "Andromede Paradoxe".
Then shows them O and O'(which mark t and t') observe a universe as
described in my transformations.
OK, boys?
R.H.