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Theorems · Theorem · geometry

eq_affineCombination_of_mem_affineSpan_of_fintype

∀ {ι : Type u_1} {k : Type u_2} {V : Type u_3} {P : Type u_4} [inst : Ring k] [inst_1 : AddCommGroup V]
  [inst_2 : Module k V] [inst_3 : AddTorsor V P] [inst_4 : Fintype ι] {p1 : P} {p : ι → P},
  p1 ∈ affineSpan k (Set.range p) → ∃ w, ∑ i, w i = 1 ∧ p1 = (Finset.affineCombination k Finset.univ p) w
Defined in
Mathlib.LinearAlgebra.AffineSpace.Combination
Cited by
14 results in Mathlib
Foundations
Depth 85 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
RingAddCommGroupModuleAddTorsorFintype

Around this declaration

Dashed lines are statement dependencies; solid lines are citations in proofs.

Affine.Simplex.sum_touchpointWeights · cited by 8Simplex.sum_touchpointWei…Affine.Simplex.affineCombination_touchpointWeights · cited by 8Simplex.affineCombination…AffineBasis.sum_coord_apply_eq_one · cited by 4AffineBasis.sum_coord_app…AffineBasis.affineCombination_coord_eq_self · cited by 3AffineBasis.affineCombina…Affine.Simplex.setInterior_map · cited by 3Simplex.setInterior_mapAffine.Simplex.affineCombination_mem_setInterior_face_iff_mem · cited by 2Simplex.affineCombination…Affine.Simplex.closedInterior_face_subset_closedInterior · cited by 2Simplex.closedInterior_fa…Affine.Simplex.exists_forall_signedInfDist_eq_iff_excenterExists_and_eq_excenter · cited by 2Simplex.exists_forall_sig…Affine.Simplex.closedInterior_eq_interior_union · cited by 1Simplex.closedInterior_eq…Affine.Simplex.closedInterior_inter_shift_zero · cited by 1Simplex.closedInterior_in…Affine.Simplex.convexHull_eq_closedInterior · cited by 1Simplex.convexHull_eq_clo…sbtw_of_sbtw_of_sbtw_of_mem_affineSpan_pair · cited by 0sbtw_of_sbtw_of_sbtw_of_m…Affine.Simplex.closedInterior_inter_shift_eq_homothety · cited by 0Simplex.closedInterior_in…Affine.Simplex.disjoint_closedInterior_shift · cited by 0Simplex.disjoint_closedIn…DFunLike.coe · cited by 62936DFunLike.coeModule · cited by 20661ModuleFinset · cited by 13712FinsetAddCommGroup · cited by 12871AddCommGroupSetLike.coe · cited by 8199SetLike.coeFintype · cited by 7736FintypeRing · cited by 7463RingFinset.sum · cited by 5195Finset.sumSet.range · cited by 4705Set.rangeFinset.univ · cited by 3473Finset.univFinset.sum_congr · cited by 2323Finset.sum_congrAddTorsor · cited by 1657AddTorsorAffineSubspace · cited by 871AffineSubspaceSet.indicator · cited by 723Set.indicatorAffineMap · cited by 674AffineMapeq_affineCombination_of_mem_a…CITED BYCITES

Cites22

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Cited by14

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