deletions | additions       diff --git a/layout.md b/layout.md  index 041ac89..5e73049 100644  --- a/layout.md  +++ b/layout.md 
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Basic_Verlet_formulation_is_as__.tex  Theorem_3_follows_from_1__.tex  Let_s_reformulate_1_and__.tex  Subsituting_vec_v_t_from__.tex Subsituting_4_into_1_vec__.tex  Now_let_s_derive_x__.tex