When the math version of this course is come

Where is the math version of this course

Where is the math version pf this course

I won’t comment because there is no reply

Respected sir Dr. brain greene
I have a question .
The speed of the particles in the particle accelerator is about 0.99999999995 times the speed of light then if Iam moving with speed 80000m/s with respect to me I will measure the speed of the particles as greater than or less than the speed of light?
And there is no experiment to prove the constancy of the speed of the accelerated particles is same in all frame of references.
Thank you sir.

Respected sir Dr. brain greene
I have a question .
The speed of the particles in the particle accelerator is about 0.99999999995 times the speed of light then if Iam moving with speed 80000m/s with respect to me I will measure the speed of the particles as greater than or less than the speed of light?
And there is no experiment to prove the constancy of the speed of the accelerated particles is same in all frame of references.
Thank you sir.