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                    | Sipser M. — Introduction to the theory of computation | 
                  
                
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                    | Предметный указатель | 
                  
                
                    
                        Polynomial time, hierarchy      386  
Polynomial time, verifier      265  
Polynomial verifiability      265  
Polynomial, versus exponential      257  
Polynomially equivalent models      257  
Pomerance, Carl      415 418  
Popping a symbol      110  
Post correspondence problem (PCP)      199—205  
Post correspondence problem (PCP), modified      200  
Power set      6 53  
PRAM      400  
Pratt, Vaughan R.      418  
Prefix notation      8  
Prefix of a string      89  
Prefix-free language      184  
Prenex normal form      225 310  
Prime number      265 295 371  
Private-key cryptosystem      407  
Probabilistic algorithm      368—380  
Probabilistic function      408  
Probabilistic Turing machine      368  
Processor complexity      400  
Production      100  
proof      17  
Proof, by construction      21  
Proof, by contradiction      21—22  
Proof, by induction      22—25  
Proof, finding      17—20  
Proof, necessity for      77  
Proper subset      4 328  
Prover      389  
Pseudoprime      372  
PSPACE      308  
PSPACE-complete problem, FORMULA-GAME      314  
PSPACE-complete problem, GG      317  
PSPACE-complete problem, TQBF      311  
PSPACE-completeness      309—320  
PSPACE-completeness, defined      309  
Public-key cryptosystem      407  
Pumping lemma, for context-free languages      123—128  
Pumping lemma, for regular languages      77—82  
Pumping length      77 91 123  
Pushdown automaton      109—122  
Pushdown automaton, context-free grammars      115—122  
Pushdown automaton, defined      111  
Pushdown automaton, examples      112—114  
Pushdown automaton, schematic of      110  
Pushing a symbol      110  
Putnam, Hilary      155  
Puzzle      297 330  
Quantified boolean formula      311  
Quantifier      310  
Quantifier, in a logical sentence      225  
Query node in a branching program      376  
Rabin, Michael O.      418  
Rackoff, Charles      417  
Ramsey’s theorem      2 7  
Range of a function      7  
Read-once branching program      377  
Real number      176  
Recognizes a language, meaning of      36 40  
Recursion theorem      217—224  
Recursion theorem, fixed-point version      223  
Recursion theorem, terminology for      221  
Recursive language      see “Decidable language”  
Recursively enumerable      see “Turing-recognizable”  
Recursively enumerable language      142  
Reducibility      187—211  
Reducibility, mapping      206—211  
Reducibility, polynomial time      272  
Reducibility, via computation histories      192—205  
Reduction      187 207  
Reduction, mapping      207  
Reflexive relation      9  
Regular expression      63—76  
Regular expression, defined      64  
Regular expression, equivalence to finite automaton      66—76  
Regular expression, examples of      65  
Regular language      31—82  
Regular language, closure under concatenation      47 60  
Regular language, closure under intersection      46  
Regular language, closure under star      62  
Regular language, closure under union      45 59  
Regular language, decidability      166—170  
Regular language, defined      40  
Regular operation      44  
Reingold, Omer      418  
Rejecting computation history      193  
Rejecting configuration      141  
Relation      8 225  
Relation, binary      8  
Relatively prime      260  
Relativization      348—351  
RELPRIME      261  
Reverse of a string      14  
Rice’s theorem      191 213 215 242 244  
RinooyKan, A.H.G.      417  
Rivest, Ronald L.      416 418  
Robinson, Julia      155  
Roche, Emmanuel      418  
Root, in a tree      11  
Root, of a polynomial      155  
Rule in a context-free grammar      100 102  
Rumely, Robert S.      415  
Ruzzo, Walter L.      417  
SAT      276 308  
Satisfiability problem      271  
Satisfiable formula      271  
Savitch’s theorem      305—307  
Saxena, Nitin      415  
Schabes, Yves      418  
Schaefer, Thomas J.      418  
Scope      310  
Scope, of a quantifier      225  
Secret key      405  
Sedgewick, Robert      418  
Self-reference      218  
Sentence      311  
SEQUENCE      6  
Sequential computer      399  
Set      3  
Set, countable      175  
Set, uncountable      176  
Sethi, Ravi      415  
Shallit, Jeffrey      415  
Shamir, Adi      418  
Shen, Alexander      418  
Shmoys, David B.      417  
Shor, Peter W.      418  
Shuffle operation      89 131  
Simple path      11  
Sipser, Michael      418 419  
Size complexity      400  
 | Small-o notation      250  
Space complexity      303—333  
Space complexity class      304  
Space complexity of nondeterministic Turing machine      304  
Space constructible function      336  
Space hierarchy theorem      337  
SPACE(f(n))      304  
Spencer, Joel H.      415  
STACK      109  
Star operation      44 62—63 295  
Start configuration      141  
Start state      34  
Start variable, in a context-free grammar      100 102  
State diagram, finite automaton      34  
State diagram, pushdown automaton      112  
State diagram, Turing machine      144  
Stearns, Richard E.      417  
Steiglitz, Kenneth      418  
Stinson, Douglas R.      419  
String      13  
Strongly connected graph      12 332  
Structure      226  
Subgraph      11  
Subset of a set      3  
Subset-Sum      268 292  
Substitution rule      100  
Substring      14  
Sudan, Madhu      415  
Symmetric difference      169  
Symmetric relation      9  
Synchronizing sequence      92  
Szegedy, Mario      415  
Tableau      355  
Tarjan, Robert E.      419  
Tautology      382  
Term, in a polynomial      154  
Terminal      100  
Terminal in a context-free grammar      102  
Th(M)      226  
Th(M) (theory of model)      226  
Theorem      17  
Theory, of a model      226  
Tic-tac-toe, game of      329  
Time complexity      247—294  
Time complexity class      267  
Time complexity, analysis of      248—253  
Time complexity, of nondeterministic Turing machine      255  
Time constructible function      340  
Time hierarchy theorem      341  
TIME(f(n))      251  
TM      see “Turing machine”  
TQBR      311  
Transducer, finite state      87  
Transducer, log space      324  
Transition      34  
Transition function      3 5  
Transitive closure      401  
Transitive relation      9  
Trapdoor function      410  
TREE      11  
Tree, leaf      11  
Tree, parse      100  
Tree, root      11  
Triangle in a graph      295  
Tuple      6  
Turing machine      137—154  
Turing machine, alternating      381  
Turing machine, comparison with finite automaton      138  
Turing machine, defined      140  
Turing machine, describing      156—159  
Turing machine, examples of      142—147  
Turing machine, marking tape symbols      146  
Turing machine, multitape      148—150  
Turing machine, nondeterministic      150—152  
Turing machine, oracle      232 348  
Turing machine, schematic of      138  
Turing machine, universal      174  
Turing reducibility      232—233  
Turing, Alan M.      2 137 155 419  
Turing-decidable language      142  
Turing-recognizable language      142  
Turing-unrecognizable language      181—182  
Turing-unrecognizable language,        210  
Two-dimensional finite automaton      213  
Two-headed finite automaton      212  
Ullman, Jeffrey D.      415 417 419  
Unary, alphabet      52 82 212  
Unary, function      8  
Unary, notation      259 295  
Unary, operation      44  
Uncountable set      176  
Undecidability, diagonalization method      174—181  
Undecidability, of        174  
Undecidability, of  .      172  
Undecidability, of        192  
Undecidability, of        195  
Undecidability, of        189  
Undecidability, of        188  
Undecidability, of        191  
Undecidability, of Post correspondence problem      200  
Undecidability, via computation histories      192—205  
Undirected graph      10  
UNION operation      4 44 45 59—60  
Unit rule      107  
Universal quantifier      310  
Universal state      381  
Universal Turing machine      174  
Universe      225 310  
Useless state in PDA      184  
Useless state in TM      211  
Valiant, Leslie G.      415  
Variable, Boolean      271  
Variable, bound      310  
Variable, in a context-free grammar      100 102  
Variable, start      100 102  
Venn diagram      4  
Verifier      265 388  
Vertex of a graph      10  
VERTEX-COVER      284  
virus      222  
Vitanyi, Paul      417  
Wegman, Mark      416  
Well-formed formula      225  
Williamson, David P.      416  
Window, in a tableau      279  
Winning strategy      314  
Wire in a Boolean circuit      352  
Worst-case analysis      248  
XOR operation      15 354  
Yannakakis, Mihalis      418  
Yields, for configurations      141  
Yields, for context-free grammars      102  
Zuckerman, Herbert S.      418  
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