Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
Each of a set of independent functions which are the solutions to a given differential equation.
- ‘In these papers a special role is played by expansions in terms of the eigenfunctions of linear differential operators.’
- ‘In this thesis he studied the representation of arbitrary functions by the eigenfunctions of partial differential equations and other given sets of functions.’
- ‘Within the next three years Stone published 10 more papers on various aspects of the theory of orthogonal expansions, especially expansions in terms of eigenfunctions of linear differential equations.’
- ‘In those cases, we see two eigenfunctions with approximately the same statistical wavelength and usually with similar eigenvalues and relative spectral power.’
- ‘From 1939 Titchmarsh concentrated on the theory of series expansions of eigenfunctions of differential equations, work which helped to resolve problems in quantum mechanics.’
We take a look at several popular, though confusing, punctuation marks.
From Afghanistan to Zimbabwe, discover surprising and intriguing language facts from around the globe.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.