Sciweavers

JUCS
2008
140views more  JUCS 2008»
13 years 4 months ago
The Computable Multi-Functions on Multi-represented Sets are Closed under Programming
: In the representation approach to computable analysis (TTE) [Grz55, i00], abstract data like rational numbers, real numbers, compact sets or continuous real functions are represe...
Klaus Weihrauch
ENTCS
2008
67views more  ENTCS 2008»
13 years 4 months ago
Notions of Probabilistic Computability on Represented Spaces
: We define and compare several probabilistic notions of computability for mappings from represented spaces (that are equipped with a measure or outer measure) into computable metr...
Volker Bosserhoff
CORR
2010
Springer
66views Education» more  CORR 2010»
13 years 5 months ago
Computing the speed of convergence of ergodic averages and pseudorandom points in computable dynamical systems
A pseudorandom point in an ergodic dynamical system over a computable metric space is a point which is computable but its dynamics has the same statistical behavior of a typical po...
Stefano Galatolo, Mathieu Hoyrup, Cristobal Rojas
CIE
2010
Springer
13 years 5 months ago
Computable Ordered Abelian Groups and Fields
Abstract. We present transformations of linearly ordered sets into ordered abelian groups and ordered fields. We study effective properties of the transformations. In particular, w...
Alexander G. Melnikov
DMTCS
2003
89views Mathematics» more  DMTCS 2003»
13 years 6 months ago
On the Monotonic Computability of Semi-computable Real Numbers
Let h : N → Q be a computable function. A real number x is h-monotonically computable (h-mc, for short) if there is a computable sequence (xs) of rational numbers which converges...
Xizhong Zheng, George Barmpalias
DLT
2008
13 years 6 months ago
When Is Reachability Intrinsically Decidable?
A graph H is computable if there is a graph G = (V, E) isomorphic to H where the set V of vertices and the edge relation E are both computable. In this case G is called a computabl...
Barbara F. Csima, Bakhadyr Khoussainov
CSR
2008
Springer
13 years 6 months ago
From Invariants to Canonization in Parallel
A function f of a graph is called a complete graph invariant if two given graphs G and H are isomorphic exactly when f(G) = f(H). If additionally, f(G) is a graph isomorphic to G, ...
Johannes Köbler, Oleg Verbitsky
MFCS
2001
Springer
13 years 9 months ago
Computable Versions of Baire's Category Theorem
We study different computable versions of Baire’s Category Theorem in computable analysis. Similarly, as in constructive analysis, different logical forms of this theorem lead ...
Vasco Brattka
CIE
2005
Springer
13 years 10 months ago
Schnorr Dimension
Following Lutz’s approach to effective (constructive) dimension, we define a notion of dimension for individual sequences based on Schnorr’s concept(s) of randomness. In contr...
Rodney G. Downey, Wolfgang Merkle, Jan Reimann
CSR
2007
Springer
13 years 11 months ago
Proving Church's Thesis
t) Yuri Gurevich Microsoft Research The talk reflects recent joint work with Nachum Dershowitz [4]. In 1936, Church suggested that the recursive functions, which had been defined...
Yuri Gurevich