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LeanPool.DirectedTopologyLean4.UnitIntervalAux

LeanPool.DirectedTopologyLean4.UnitIntervalAux #

theorem unitIAux.double_pos_of_pos {T : unitInterval} (hT₀ : 0 < T) :
0 < 2 * T
theorem unitIAux.double_sigma_pos_of_lt_one {T : unitInterval} (hT₁ : T < 1) :
0 < 2 * (1 - T)
theorem unitIAux.double_mem_I {t : unitInterval} (ht : t 2⁻¹) :
theorem unitIAux.interp_left_le_of_le (T : unitInterval) {a b : unitInterval} (hab : a b) :
(unitInterval.symm T) * a + T (unitInterval.symm T) * b + T
@[reducible, inline]
noncomputable abbrev unitIAux.halfI :

The midpoint 1/2 of the unit interval.

Equations
Instances For
    theorem unitIAux.has_T_half {t₀ t₁ : unitInterval} (γ : Path t₀ t₁) (ht₀ : t₀ < 2⁻¹) (ht₁ : t₁ > 2⁻¹) :
    ∃ (T : unitInterval), 0 < T T < 1 γ T = halfI