The Logic of Limited Expression

The arrangement, known as Post’s Lattice, demonstrates a repeating, three-dimensional structure built from tetrahedra, revealing how complex forms can emerge from simple, interconnected elements-a testament to the inherent efficiency in structural repetition as systems evolve toward minimal energy states and eventual decay.

This review explores how restricting the tools of propositional and modal logic impacts what we can express, and how easily we can reason with those limited systems.

Securing Finance in a Quantum World

A new protocol aims to safeguard financial transactions against the looming threat of quantum computing by combining advanced cryptography and privacy-enhancing technologies.