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- On the other hand, the Church–Turing thesis states that the above three formally-defined classes of computable functions coincide with the informal notion of an effectively calculable function.[1]
- The Church-Turing thesis states the equivalence between the mathematical concepts of algorithm or computation and Turing-Machine.[2]
- Hence, Church-Turing thesis also states that λ-calculus and recursive functions also correspond to the concept of computability.[2]
- In 1930, this statement was first formulated by Alonzo Church and is usually referred to as Church’s thesis, or the Church-Turing thesis.[3]
- There are various equivalent formulations of the Turing-Church thesis (which is also known as Turing's thesis, Church's thesis, and the Church-Turing thesis).[4]
- The Turing-Church thesis is the assertion that this set contains every function whose values can be obtained by a method satisfying the above conditions for effectiveness.[4]
- When the thesis is expressed in terms of the formal concept proposed by Turing, it is appropriate to refer to the thesis also as 'Turing's thesis'; and mutatis mutandis in the case of Church.[4]
- He argued for the claim (Turing's thesis) that whenever there is an effective method for obtaining the values of a mathematical function, the function can be computed by a Turing machine.[4]
- The Church-Turing thesis encompasses more kinds of computations than those originally envisioned, such as those involving cellular automata, combinators, register machines, and substitution systems.[5]
- There are conflicting points of view about the Church-Turing thesis.[5]
- Church's thesis and Turing's thesis are thus equivalent, if attention is restricted to functions of positive integers.[6]
- Later in this article we examine complexity-theoretic and physical versions of the Church-Turing thesis but first turn to the question of the justification of the theses introduced so far.[6]
- The Church-Turing thesis is the assertion that this set S contains every function whose values can be obtained by a method satisfying the above conditions for effectiveness.[7]
- The Church-Turing thesis is about computation as this term was used in 1936, viz.[7]
- This promise is hindered by the widespread belief, incorrectly known as the Church-Turing thesis, that no model of computation more expressive than Turing machines can exist.[8]
- The Church-Turing thesis: A Turing machine that halts on all inputs is the precise, formal notion corresponding to the intuitive notion of an algorithm.[9]
- The Church-Turing thesis cannot be proved because it relates a formal concept (Turing machines) to a vaguely dened informal one.[9]
- Also, the fact that all reasonable extensions to Turing machines do not increase their power, is a justication of the Church-Turing thesis.[9]
- Using the Church-Turing thesis, if one can show that a problem cannot be solved on a Turing machine, then it is reasonable to conclude that it cannot be solved by any computer or by any human.[9]
- The extended Church-Turing thesis is a foundational principle in computer science.[10]
- So, their two statements merged into one, which we now call Church-Turing thesis.[11]
- So, we can present the following equivalent formulation of the Church-Turing thesis: Equivalent formulation of the Church-Turing thesis.[11]
- To prove that the Ackermann function is computable is easy with todays tools Turing machines and Church-Turing thesis.[12]
- The Church-Turing thesis also does not provide insight into a working Theory of the Mind - the human brain and sentience is still a mystery.[13]
- The church-turing thesis: Consensus and opposition.[13]
- There are various proposed derivation of the Church-Turing thesis from physics laws.[14]
- Oron Shagrir have written several philosophical papers about the Church-Turing thesis see his webpage.[14]
- " One aspect of the effecient Church-Turing thesis (again, both in its classical and quantum version) is that NP hard problems cannot be computed efficiently by any computational device.[14]
- The fact that the class of E partial functions is closed under all known techniques of this sort is another bit of evidence in favor of the Church-Turing thesis.[15]
- Right back in Chapter 2 we stated Turing's Thesis: a numerical (total) function is effectively computable by some algorithmic routine if and only if it is computable by a Turing machine.[16]
- The Church Turing thesis is perhaps best understood as a definition of the types of functions that are calculable in the real world - not as a theorem to be proven.[17]
- This paper defends a modest version of the Physical Church-Turing thesis (CT).[18]
- Venn diagrams representing The Church-Turing thesis and its converse.[18]
- This claim is called the Church-Turing thesis.[19]
- The Church-Turing thesis is appealed to in two ways.[19]
- Then we can invoke the Church-Turing thesis to justify the claim that the same function is computed by some Turing machine, even if we have not in fact constructed it.[19]
- From this, using the Church-Turing thesis, one can conclude that it cannot be eectively computed, using any procedure whatsoever.[19]
- I propose this idea as an alternative foundation for the Church-Turing thesis, both for human and machine computation.[20]
- The previous result combined with a similar one with the Turing Machine, led to the Church-Turing thesis.[21]
소스
- ↑ Church–Turing thesis
- ↑ 이동: 2.0 2.1 Church-Turing Thesis
- ↑ Church’s Thesis for Turing Machine
- ↑ 이동: 4.0 4.1 4.2 4.3 AlanTuring.net The Turing-Church Thesis
- ↑ 이동: 5.0 5.1 Church-Turing Thesis -- from Wolfram MathWorld
- ↑ 이동: 6.0 6.1 The Church-Turing Thesis: Logical Limit or Breachable Barrier?
- ↑ 이동: 7.0 7.1 The Church-Turing Thesis (Stanford Encyclopedia of Philosophy)
- ↑ The Church-Turing Thesis: Breaking the Myth
- ↑ 이동: 9.0 9.1 9.2 9.3 1 undecidability; the church-turing thesis
- ↑ Quantum computation and extended church-turing thesis
- ↑ 이동: 11.0 11.1 Church-turing thesis
- ↑ A brief note on church-turing thesis and r.e. sets
- ↑ 이동: 13.0 13.1 Church-Turing Thesis — Vish Ravindran
- ↑ 이동: 14.0 14.1 14.2 Physics and Church–Turing Thesis
- ↑ The church-turing thesis
- ↑ The Church–Turing Thesis (Chapter 34)
- ↑ Church-Turing Thesis
- ↑ 이동: 18.0 18.1 The physical church-turing thesis: modest or bold?1
- ↑ 이동: 19.0 19.1 19.2 19.3 Mac.1 the church-turing thesis
- ↑ “the church-turing “thesis” as a special corollary of gödel’s
- ↑ What is the church-turing thesis?
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