deletions | additions       diff --git a/layout.md b/layout.md  index 55c1d5e..0753055 100644  --- a/layout.md  +++ b/layout.md 
...
Taking_into_account_that_vec__.tex  Now_11_can_be_equivalently__.tex  First_step_in_Velocity_Verlet__.tex  vec_x_t_Delta_t__1.tex