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                    | Barwise J., Etchemendy J., Allwein G. — Language, Proof and Logic |  
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                    | Предметный указатель |  
                    | |  501 
  415 
  415 
  412 
  228 230—231 
  Elim      348 
  Intro      347 
  228 230 
  Elim      342 
  Intro      343 
  37 406 
  181 
  Elim      209 
  Intro      209 
  54 142 342 
  215 470 
  532 
  498 
  68 
  Elim      155 161 
  Intro      155 
  68 
  137 155 157 
  Elim      159 
  Intro      156 
  7 
  413 
  178 
  Elim      206 
  Intro      206 
  470 
  74 
  Elim      150 
  Intro      148 
  71 
  Elim      143 
  Intro      144 
  429 =      25 37
 = Elim      50 51 56
 = Intro      50 51 55
 Absolute complement      419 440
 AC      436
 Aczel, Peter      441 465
 Addition      129
 AFA      441
 Affirming the consequent      203 212
 Alternative notation      40 66 89 90 196 255—256
 Ambig-wffs      444
 Ambiguity      4 79 307
 Ambiguity and context      304
 Ambiguity and inference      308
 Ana Con      60 61 114 115 158 272 286
 Analytic consequence      60
 Antecedent of a conditional      178
 Antecedent of a conditional, strengthening      203 212
 Anti-foundation axiom      441
 Antisymmetry      422
 Appropriate variable assignment      501
 Arbitrary individual      348
 Argument      41 44
 Argument of a predicate      21
 Argument, sound      43 44 140
 Argument, valid      42 44 140
 Aristotelian forms      239—242
 Aristotle      3 239
 Arithmetic, first-order language of      38
 Arity      21 23 25
 Arity of function symbols      33
 Artificial language      2—4
 Associativity of
  118 Associativity of
  118 Assumption for conditional proof      200
 Assumption for existential instantiation      322
 Assumption for general conditional proof      324 343
 Assumption for indirect proof      136
 Assumption for proof by cases      132
 Asymmetry      422
 Atomic sentences      19 23 23 25 32
 Atomic wff      228—229 231
 Automated theorem proving      312
 Axiom, Anti-foundation      441
 Axiom, Choice      436
 Axiom, comprehension      406 409 408—410 433 435
 Axiom, Extensionality      407 406—408 435
 Axiom, Infinity      436
 Axiom, Powerset      436
 Axiom, Regularity      436 440 441
 Axiom, Replacement      436
 Axiom, Separation      435
 Axiom, union      435 440
 Axiom, Unordered Pair      435
 Axiomatic method      283 287 288
 Axiomatic method and presuppositions      287
 Axioms      47 288
 Axioms of Peano arithmetic      456—457
 Axioms of set theory      435
 Axioms, shape      285 338—340
 Axioms, shape, completeness of      512
 Background assumptions      287
 Barber paradox      333 362
 Base clause of inductive definition      444 445
 Basis of proof by induction      449
 BETWEEN      25
 Biconditional      181 198
 Biconditional elimination      199 209
 Biconditional introduction      209
 Binary function symbol      33
 Binary relation symbol      308
 Binary truth-functional connective      190
 Boole      5—10 100
 Boole, George      67
 Boolean searches      91
 Boolos, George      555
 Bound variable      232 282
 Boxed constant      343 347
 Cancellability test      188
 Cantor, Georg      406 437 467
 Carroll, Lewis      268
 Cartesian product      421 440
 Cases, proof by      131—134
 Chain of equivalences      120 128
 Claim      24
 Claim, inherently vacuous      246
 Clause for resolution      488
 Clause, empty      489 524
 CNF      124
 Commitment      79
 Commitment in game      77 78
 Commutativity      146
 Commutativity of
  119 Commutativity of
  119 Compactness Theorem for first-order logic      527 548
 Compactness Theorem for propositional logic      477
 Complete deductive system      214 219 361
 Complete set of axioms      338
 Complete truth-functionally      190 193
 Completeness of resolution      491
 Completeness theorem      219 526
 Completeness Theorem for first-order logic      527
 Completeness Theorem for propositional logic      470
 Completeness Theorem for propositional logic, reformulation of      472
 Completeness Theorem, use of      220
 Complex noun phrase      243
 Complex term      32 34
 Con procedures in Fitch      61
 Conclusion      41 44
 Conditional      176 178 198 398
 Conditional antecedent of      178
 Conditional antecedent of strengthening      203 212
 
 | Conditional consequent of      178 Conditional consequent of affirming      203 212
 Conditional consequent of strengthening      203 212
 Conditional consequent of weakening      203 212
 Conditional contrapositive of      199
 Conditional elimination      198 206
 Conditional introduction      206
 Conditional proof      199 203 206
 Conditional proof, general      323 329 442
 Conjunction      67 71 129
 Conjunction, elimination      129 143
 Conjunction, introduction      129 144
 Conjunctive normal form (CNF)      121—125 479
 Connectives, truth-functional      67 93 177
 Connectives, truth-functional, binary      190
 Connectives, truth-functional, Boolean      67
 Connectives, truth-functional, semantics for      68 72 75 178 182
 Connectives, truth-functional, ternary      195
 Consequence      297
 Consequence, analytic      60
 Consequence, first-order      267 266—273
 Consequence, FO      267
 Consequence, logical      2 4—5 41 42 44 46 93 110 181 267
 Consequence, tautological      110—113 219
 Consequence, tautological, in Fitch      114
 Consequent of a conditional      178
 Consequent of a conditional affirming      203 212
 Consequent of a conditional strengthening      203 212
 Consequent of a conditional weakening      203 212
 Conservativity      389—390
 Constructive dilemma      203 212
 Context sensitivity      27 304 307
 Contradiction      137 155
 Contradictory TT-      138
 Contradictory, TT-      158
 Contraposition      199
 Contrapositive      201
 Conversational implicature      187 188 244—247 381
 Corollary      218
 Correctness of axioms      338
 Counterexample      5 15 63
 Counterexample, first-order      270
 Date of Birth Lemma      530
 Deduction Theorem      535
 Deductive system      54
 Definite descriptions, Russellian analysis      379
 Definite descriptions, Strawson's objection      381
 DeMorgan laws      81 82 83 106 182 312
 DeMorgan laws and first-order equivalence      275—279
 DeMorgan laws for quantifiers      279 355
 Determinate property      22 24
 Determiners      227 364
 Determiners, anti-persistent      392
 Determiners, general form      384
 Determiners, generalized, adding to fol      388
 Determiners, generalized, binary      397
 Determiners, generalized, logic of      394
 Determiners, generalized, semantics of      387
 Determiners, monotone      366 392
 Determiners, monotone, decreasing      391
 Determiners, monotone, increasing      390
 Determiners, persistent      392—394
 Determiners, reducible      385
 Discharged assumption      164
 Disjunction      67 74
 Disjunction, elimination      149
 Disjunction, exclusive      74 75
 Disjunction, inclusive      74
 Disjunction, introduction      129 148
 Disjunctive normal form (DNF)      121—125
 Distributive laws      122
 Distributive laws of
  over  122 124 DNF      124
 DNF sentence      125
 Dodgson, Charles      268
 Domain of a function      427
 Domain of discourse      236 348 496 498
 Domain of quantification      236
 dot notation      90
 Double Negation      68 83 83
 Elimination rules      142
 Elimination Theorem      528 534
 Elimination Theorem, proof of      538
 Empty clause      489 524
 Empty set      412
 Enderton, Herbert      435 555
 Equivalence classes      424—425
 Equivalence relations      424—425
 Equivalence, first-order      267
 Equivalence, first-order, and DeMorgan laws      275—279
 Equivalence, logical      93 106—109 267
 Equivalence, logical, of wffs with free variables      276
 Equivalence, tautological      106—109
 Euclid's theorem      332
 Even number      200 242
 Excluded Middle      97 128 174
 Exclusive disjunction      74 75
 Existential elimination      322 347
 Existential generalization      320 321
 Existential instantiation      322—323 329 332
 Existential introduction      320 347
 Existential noun phrase      243
 Existential quantifier      230—231
 Existential sentence      400
 Existential wff      450
 Extended discourse      306 307
 Extension of a predicate      422 497 498
 files, naming      6—7
 Files, submitting      5—10
 First-order consequence      267 505
 First-order languages      2
 First-order languages, arithmetic      38
 First-order languages, expressive limitations of      397—398
 First-order languages, set theory      37
 First-order logic      2
 First-order logic, language of, (fol)      2
 First-order structure      498 495—498 500
 First-order validity      267 505
 First-order vs. second-order      257
 Fitch      5—10 14 58
 Fitch bar      43 54
 Fitch format      43
 Fitch, Frederic      43 54
 Fitch-style deductive system      14 54 149 163
 Fitch-style deductive system, extended      376
 FO Con      115 158 271 272 286 524
 Fo-satisfiable      506
 Formal proof      54 142 206 376
 Formally complete theory      472
 Formally consistent theory      471
 Free logic      20n
 Free variable      232
 Frege, Gottlob      3
 Function      427
 Function symbols      31 31—34 229 308 514 516
 Function symbols and quantification      251—253
 Function symbols of arithmetic      38
 Function symbols, completeness for languages with      544
 Function, domain of      427
 Function, modeling in set theory      427—428
 Function, partial on a domain      427
 Function, partial, defined on an object      428
 Function, range of      428
 Function, total on a domain      427
 Functional calculus      2
 Game      67 77
 Game rules      78 237
 Game rules for
  182 Game rules for
  68 Game rules for
  178 
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