How statement and proof provenance work
The first chip identifies the source of the statement or construction; the second identifies the source of its local proof or verification.
- Literature-sourced: the exact statement appears in a cited source; only wording and notation differ.
- AI-adapted: a semantically identical restatement of literature-sourced material, modulo indexing, notation, and boundary cases adopted by the library.
- AI-generated: a genuinely novel statement formulated by AI, with no source for the claim itself.
These labels describe origin, not correctness: citations and verification chips remain separate evidence.
Testing a few short binary strings for machine-code well-formedness
Example
Under the chosen code of A fixed effective binary encoding of deterministic one-tape Turing machines, compare the short words
Facts & Assumptions
Given: The three displayed binary words.
By The chosen machine coding is injective and has a total decoder, the decoder either reconstructs one coded machine or reports malformed input.
By Well-formed deterministic one-tape Turing machine descriptions form a decidable language, this decoder test decides well-formed machine descriptions.
Verification
The words 0 and 10 are malformed. The first never even begins the required positive-arity tuple code, and the second announces arity but provides no self-delimiting payload block. Therefore the decoder of [L1] rejects both.
The word 111111011011100101101100101 is the code of the tuple , so it decodes to the normalized machine with , , , and the unique transition . In particular , and the tuple has the required entries. Thus [L1] accepts it as a well-formed machine description, and [L2] classifies the three sample words exactly as claimed.
This makes the decidability test concrete: two malformed inputs are rejected and one genuine machine code is accepted.
Depends on
Used by
Nothing in the library uses this result yet.
Dependency tree · two levels
7 results within two dependency steps of this one, each drawn at its shortest distance from it. An arrow runs from a result to what uses it, so the chart reads left to right and ends at this result, which carries a heavier outline. Every node is a link to that result. Click elsewhere on the chart to enlarge it.
Sources
- John Watrous, Introduction to the Theory of Computing, Lecture 17: More undecidable languages; reductions (standard reference, not scraped)
- Jean Gallier and Jocelyn Quaintance, Introduction to the Theory of Computation: Some Notes for CIS511 (standard reference, not scraped)