3 search results - page 1 / 1 » Post Embedding Problem Is Not Primitive Recursive, with Appl... |
FSTTCS
2007
Springer
13 years 11 months ago
2007
Springer
We introduce PEP, the Post Embedding Problem, a variant of PCP where one compares strings with the subword relation, and PEPreg , a further variant where solutions are constrained ...
CADE
2005
Springer
14 years 5 months ago
2005
Springer
Abstract. We investigate the computational behaviour of `two-dimensional' propositional temporal logics over (N, <) (with and without the next-time operator ?) that are cap...
FC
2007
Springer
13 years 11 months ago
2007
Springer
This paper introduces Hidden Identity-based Signatures (Hidden-IBS), a type of digital signatures that provide mediated signer-anonymity on top of Shamir’s Identity-based signat...