topology

These principles are governed by the nuanced interplay of stitch patterns, geometry, and yarn topology -- the undercrossings or overcrossings in a knot or stitch.

"Qin and I showed that using topology," Palmerduca said, "we can modify Wigner's classification for massless particles, giving a description of photons that works in all directions at the same time."

COFs are a new class of porous, crystalline, purely organic materials with defined topology.

After publishing breakthrough studies in pattern recognition, string theory and a framework that combined geometry and topology with quantum field theory, Mr. Simons decided to apply his genius to a more prosaic subject — making as much money as he could in as short a time as possible.

That kept the values random -- but random within limits given by constraints of the network topology.