Aspects and Prospects of Theoretical Computer Science

Methods for generating deterministic fractals and image compression.- Optimum simulation of meshes by small hypercubes.- Seven hard problems in symbolic background knowledge acquisition.- Subsequential functions: Characterizations, minimization, examples.- Past proves more invariance properties but not pca's.- Complexity issues in discrete neurocomputing.- Two-way reading on words.- Proofs and reachability problem for ground rewrite systems.- Problems complete for ?L.- Constructive matching - Explanation based methodology for inductive theorem proving.- Characterizing complexity classes by higher type.- The distributed termination problem : Formal solution and correctness based on petri nets.- Greedy compression systems.- A DIV(N) depth Boolean circuit for smooth modular inverse.- Learning by conjugate gradients.- Monoids described by pushdown automata.- Optimal parallel 3-colouring algorithm for rooted trees and its application.- Hierarchies over the context-free languages.- A hierarchy of unary primitive recursive string-functions.- Minimizing picture words.- Remarks on the frequency-coded neural nets complexity.- Picture generation using matrix systems.- Representing heuristic-relevant information for an automated theorem prover.- A new method for proving lower bounds in the model of algebraic decision trees.- Area time squared and area complexity of VLSI computations is strongly unclosed under union and intersection.- Decision procedure for checking validity of PAL formulas.