abbrev
definition
def or abbrev
Displacement
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view Lean formalization →
formal statement (Lean)
182abbrev Displacement := Fin 4 → ℝ
proof body
Definition body.
183
184/-- The spacetime interval for a displacement vector. -/
used by (15)
-
RealityCertificate -
interval -
interval_eq_spatial_minus_temporal -
lightlike_iff_speed_c -
proper_time_from_velocity -
proper_time_sq -
proper_time_sq_eq_neg_interval -
proper_time_sq_pos_of_timelike -
spacelike_iff_superluminal -
SpacetimeEmergenceCert -
spatial_norm_sq -
temporal_sq -
timelike_iff_subluminal -
timelike_iff_subluminal_velocity -
velocity_sq