Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
A space which has an associated family of subsets that constitute a topology. The relationships between members of the space are mathematically analogous to those between points in ordinary two- and three-dimensional space.
- ‘Moore's regions would ultimately become open sets that form a basis for a topological space X.’
- ‘In a well-known textbook on the subject we find a continuum defined as a compact connected subset of a topological space.’
- ‘He called this topological space the structure space of R.’
- ‘The mathematicians in Göttingen were particularly impressed with their results on when a topological space is metrisable.’
- ‘This first work was related to their results on conditions for a topological space to be metrisable.’
- ‘He used the notion of a limit point to give closure axioms to define a topological space.’
- ‘In further papers, published in 1936, he defined cohomology groups for an arbitrary locally compact topological space.’
- ‘But it is also a generalized topological space and thus provides a direct connection between logic and geometry.’
- ‘A blunder occurs on page 182 when he wants to define separability of a topological space as referring to a countable base but instead says, ‘A topological space X is separable if it has a countable open covering.’’
- ‘These are then applied to the topological space of the surface geometry.’
We take a look at several popular, though confusing, punctuation marks.
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The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.