All kinds of things can be found among integer sequences, including the weird and nonsensical. Enter Smarandache sequences (S. sequences, for short), which are integer sequences due to Florentin Smarandache and his disciples. Some S. sequence are related to number-theoretic topics. Others, at first glance (second, third, ...) seem downright silly. An example is the progressive concatenation of ...

We propose and analyze a temporal concatenation heuristic for solving large-scale finite-horizon Markov decision processes (MDP), which divides the MDP into smaller sub-problems along time horizon generates an overall solution by simply concatenating optimal solutions from these sub-problems. As “black box” architecture, works with wide range of existing algorithms. Our main results characteriz...

Strong blocking sets and their counterparts, minimal codes, have attracted much attention in the past few years. Combining concatenating construction of codes with a geometric insight into minimality condition, we explicitly provide infinite families small strong sets, whose size is linear dimension ambient projective spaces. As byproduct, saturating are obtained.