Types of Addresses and Levels of use in the TCP/IP Protocol Stack

The publication comments on certain moments of the method of teaching the types of addresses and their use in the TCP/IP protocol stack.

Automorphisms of the Planar Tree Power Series Algebra and the Non-Associative Logarithm

2000 Mathematics Subject Classification: 17A50, 05C05.

Lower Bounds on the Directed Sweepwidth of Planar Shapes

We investigate a recently introduced width measure of planar shapes called sweepwidth and prove a lower bound theorem on the sweepwidth.