Pedagogical Justifications that Zero Factorial Equals One

Meiotic Spindle Self-Organization: One Plus One Equals Only One

Like other cellular organelles, the bipolar spindle is a structure of well-defined size and shape. Now, spindle fusion experiments using micro-manipulation have allowed current models for spindle morphogenesis and size control to be tested.

One sequence plus one mutation equals two folds.

I n this issue of PNAS, Alexander et al. (1) report an observation that will be a topic of heated discussion among biochemists for a long time to come. A single amino acid substitution can, in the right context, completely change the fold of a protein. And the structural change produced by this one mutation cannot be dismissed as a semantic issue over what constitutes a different fold. As shown...

The critical value of the Deffuant model equals one half

Similarly to the popular voter model, the Deffuant model describes opinion dynamics taking place in spatially structured environments represented by a connected graph. Pairs of adjacent vertices interact at a constant rate. If the opinion distance between the interacting vertices is larger than some confidence threshold ǫ > 0, then nothing happens, otherwise, the vertices’ opinions get closer t...

Physiological coreceptor use by dual-tropic HIV-1: one plus one equals one.

Formalizations Of Substitution Of Equals For Equals

Inference rule substitution of equals for equals has been formalized in terms of simple substitution which performs a replacement even though a free occurrence of a variable is captured contextual substitution which prevents such capture and func tion application We show that in connection with pure rst order predicate calculus the function application and no capture versions of the inference r...