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Read-only right moving Turing machines : ウィキペディア英語版
Read-only right moving Turing machines

Read-only right moving Turing machines are a particular type of Turing machine.
== Definition ==

The definition based on a single infinite tape defined to be a 7-tuple
M= \langle Q, \Gamma, b, \Sigma, \delta, q_0, F \rangle where
* Q is a finite set of ''states''
* \Gamma is a finite set of the ''tape alphabet/symbols''
* b \in \Gamma is the ''blank symbol'' (the only symbol allowed to occur on the tape infinitely often at any step during the computation)
* \Sigma, a subset of \Gamma not including b is the set of ''input symbols''
* \delta: Q \times \Gamma \rightarrow Q \times \Gamma \times \ is a function called the ''transition function'', R is a right movement (a right shift).
* q_0 \in Q is the ''initial state''
* F \subseteq Q is the set of ''final'' or ''accepting states''
In the case of these types of Turing Machines, the only movement is to the right.
There must exist at least one element of the set F (a HALT state) for the machine to accept a regular language (Not in including the empty language).
An example Read Only right moving Turing machine
:Q =
:Γ =
:b = 0 = "blank"
:Σ = \varnothing, empty set
:δ = see state-table below
:q0 = A = initial state
:F = the one element set of final states
State table for 3 state, 2 symbol read only machine:

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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