Automata and Formal Language (chapter 7) pot

... erase A and move to q k if receiving a and at q j erase BC and move to q k At q i erase A and move to q k if receiving a and at q j erase B and move to q m and at q m erase C and move ... A and move to q k if receiving a and at q j erase B and move to q m and at q m erase C and move to q k (q i Aq k ) → a(q j Bq m )(q m Cq k ) 2 Pushdown Automata • There a...

Ngày tải lên: 14/07/2014, 02:20

... ngôn ngữ hình thức. Hồ Văn Quân • An introduction to formal languages and automata. Peter Linz • Introduction to automata theory, languages, and computation. John Hopcroft & Jeffrey Ullman Automaton ... Language (cont’d) • Language: a subset L of Σ* • Sentence: a string in L • Example 1.3: In Example 1.2, L is a language on Σ, w is a string of Σ but not a sentence in L Fo...

Ngày tải lên: 14/07/2014, 02:20

... of the form: A → xB A → x A, B ∈ V and x ∈ T * Theorem 3.4 L is a regular language iff there exists a regular grammar G such that L = L(G). Regular Language and Regular Grammar Example 3.3 r ... Recalled • Formal grammar: G = (V, T, S, P) V: finite set of variables T: finite set of terminal symbols S∈V: start variable P: finite set of productions Equivalent Regular Expression r 1...

Ngày tải lên: 14/07/2014, 02:20

... F and y ∈ L 2 q 1 q 2 b b Questions about RL 2. Is there an algorithm to determine whether or not a regular language is empty, finite, or infinite?. Yes. Right Quotient Let L 1 and L 2 be languages ... L 1 and y ∈ L 2 } Homomorphism (cont’d) If L is a language on Σ, then its homomorphic image is defined as: h(L) = {h(w): w ∈ L} Questions about RL 3. Given two regular languages L...

Ngày tải lên: 14/07/2014, 02:20

... (cont’d) Proof: • Draw the variable dependency graph for G 1 and find all variables that cannot be reached from S. • Remove those variables and the productions involving them. • Eliminate any terminal ... V 1 . • Reduce the length of the right sides of the productions: 1. Put all productions A → a and A → BC into P^. 2. Repeat until no more productions are added to P^: For each...

Ngày tải lên: 14/07/2014, 02:20

... ngôn ngữ hình thức. Hồ Văn Quân • An introduction to formal languages and automata. Peter Linz • Introduction to automata theory, languages, and computation. John Hopcroft & Jeffrey Ullman Storage  A ... configuration Generated Language G = (V, T, S, P) L(G) = {w∈T* | S ⇒* w} • Example 1.8: Take into consideration the grammar given in Example 1.6: L(G) = {a n b n | n ≥ 0}...

Ngày tải lên: 13/05/2014, 10:21

Ngày tải lên: 04/07/2014, 13:20

... Ab A → aAb A → λ 3 Formal Languages & Automata A formal language:  Is an abstraction of the general characteristics of programming languages.  Consists of a set of symbols and some formation ... trên. 15 Languages  Language concatenation: L1L2 = {xy | x∈L1, y∈L2} L n = L L L (n times) L 0 = {λ} 13 Languages  Language: a subset L of Σ *  Word or Sentence: a string in L...

Ngày tải lên: 11/07/2014, 19:20

... RIPv2  Enabling and Verifying RIPv2  Auto-Summary and RIPv2  Disabling Auto-Summary in RIPv2  Verifying RIPv2 Updates  VLSM and CIDR  RIPv2 and VLSM  RIPv2 and CIDR  Verifying and Troubleshooting ... RFC 1918 and Cisco Example addresses for all topologies. Private Addresses and Cisco Example Addresses RFC 1918 Private Addresses Cisco Example Addresses 20  RIPv1 on bo...

Ngày tải lên: 09/03/2014, 13:20

... studies. RabølleandSpliid(2000)performedaleachingstudywithtylosininpackedsoil coresoftwosoiltypes:asandyloamandasandytype.TheK d values described for thosesoilswere12 8and1 0.8,respectively,anddesorptionwasreportedat1 3and 26%. ... and Kilpper-Balz, 1987; Schaechter, 2000). Both organ - is msarepotentiallypathogenicandcandevelopresistancetoantibioticsandhavethe potentialtotransferresistanc...

Ngày tải lên: 18/06/2014, 16:20