Spectral functions and time evolution from the Chebyshev recursion

16 DMRG: Ground States, Time Evolution, and Spectral Functions

formation and evolution of regional organizations: the case study of the economic cooperation organization (eco)

abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...

Syntax Evolution: Problems and Recursion

We are Turing complete, and natural language parsing is decidable, so our syntactic abilities are in excess to those needed to speak a natural language. This is an anomaly, because evolution would not select and keep an overqualified feature. We solve this anomaly by using a coincidence, both syntax and problem solving are computing, and a difference, Turing completeness is not a requirement of...

A Relative Laplacian Spectral Recursion

The Laplacian spectral recursion, satisfied by matroid complexes and shifted complexes, expresses the eigenvalues of the combinatorial Laplacian of a simplicial complex in terms of its deletion and contraction with respect to vertex e, and the relative simplicial pair of the deletion modulo the contraction. We generalize this recursion to relative simplicial pairs, which we interpret as convex ...

Chebyshev and Fourier Spectral Methods Second Edition

A computation is a temptation that should be resisted as long as possible. "