The lady vanishes

The Substitution Vanishes

Accumulation techniques were invented to transform functional programs, which intensively use append functions (like inefficient list reversal), into more efficient programs, which use accumulating parameters instead (like efficient list reversal). In this paper we present a generalized and automatic accumulation technique that also handles programs operating with unary functions on arbitrary t...

The Concatenate Vanishes

This note presents a trivial transformation that can eliminate many calls of the concatenate (or “append”) operator from a program. The general form of the transformation is well known, and one of the examples, transforming the reverse function, is a classic. However, so far as I am aware, this style of transformation has not previously been systematised in the way done here. The transformation...

Viewpoint The antineutrino vanishes differently

CPT symmetry, the combination of charge conjugation, parity inversion, and time reversal, is a fundamental symmetry of particle and nuclear physics and is considered sacred. It is conserved in field theories that explain the strong, weak, and electromagnetic interactions. In the lepton sector, CPT symmetry requires that muon neutrino disappearance oscillations be identical to muon antineutrino ...

The Lady Almoner

j'HOUSANDS of patients pass through the doors of a great hospital every year, and not all are ln-patients. Many receive advice and treatment ^hich can be carried out at home, and in every hospital the out-patient department is very important. Long hours are devoted by skilled physicians and surgeons to the treatment of out-patients, but having given their help, what is impossible to the medical...

The Hon. Lady Darwin