Nuprl Lemma : board-cell_wf

[T:Type]. ∀[n:ℕ]. ∀[b:square-board(n;T)]. ∀[i,j:ℕn].  (board-cell(b;i;j) ∈ T)


Proof




Definitions occuring in Statement :  board-cell: board-cell(b;i;j) square-board: square-board(n;T) int_seg: {i..j-} nat: uall: [x:A]. B[x] member: t ∈ T natural_number: $n universe: Type
Definitions unfolded in proof :  uall: [x:A]. B[x] member: t ∈ T square-board: square-board(n;T) board-cell: board-cell(b;i;j) and: P ∧ Q int_seg: {i..j-} uimplies: supposing a guard: {T} nat: ge: i ≥  lelt: i ≤ j < k all: x:A. B[x] decidable: Dec(P) or: P ∨ Q satisfiable_int_formula: satisfiable_int_formula(fmla) exists: x:A. B[x] false: False implies:  Q not: ¬A top: Top prop: squash: T true: True subtype_rel: A ⊆B iff: ⇐⇒ Q rev_implies:  Q
Lemmas referenced :  iff_weakening_equal true_wf squash_wf less_than_wf nat_wf square-board_wf int_seg_wf int_formula_prop_eq_lemma int_formula_prop_less_lemma intformeq_wf intformless_wf decidable__lt int_formula_prop_wf int_term_value_var_lemma int_term_value_constant_lemma int_formula_prop_le_lemma int_formula_prop_not_lemma int_formula_prop_and_lemma itermVar_wf itermConstant_wf intformle_wf intformnot_wf intformand_wf satisfiable-full-omega-tt decidable__le nat_properties int_seg_properties list_wf select_wf
Rules used in proof :  sqequalSubstitution sqequalTransitivity computationStep sqequalReflexivity isect_memberFormation introduction cut sqequalHypSubstitution setElimination thin rename sqequalRule productElimination lemma_by_obid isectElimination cumulativity hypothesisEquality because_Cache hypothesis independent_isectElimination natural_numberEquality equalityTransitivity equalitySymmetry dependent_functionElimination unionElimination dependent_pairFormation lambdaEquality int_eqEquality intEquality isect_memberEquality voidElimination voidEquality independent_pairFormation computeAll axiomEquality universeEquality applyEquality imageElimination imageMemberEquality baseClosed independent_functionElimination

Latex:
\mforall{}[T:Type].  \mforall{}[n:\mBbbN{}].  \mforall{}[b:square-board(n;T)].  \mforall{}[i,j:\mBbbN{}n].    (board-cell(b;i;j)  \mmember{}  T)



Date html generated: 2016_05_15-PM-03_13_58
Last ObjectModification: 2016_01_16-AM-10_47_52

Theory : general


Home Index