Irving Copi noted that universal instantiation "...follows from variants of rules for 'natural deduction', which were devised independently by Gerhard Gentzen and Stanislaw Jaskowski in 1934."

"There's no way two men on opposite sides of California would have independently devised the same method."

Around the same time, new cryogenic air separation processes had been devised independently in Britain, the United States and Germany.

It is a remarkable example of synchronicity that no fewer than six such classifications, all pointing toward the discovery of periodicity, were independently devised in the next decade.

The classic flow solution-the so-called "similarity solution"-was independently devised by John von Neumann and British mathematician Geoffrey Ingram Taylor during World War II.

Many colleges, universities and externally examining bodies will also offer their own independently devised National Diploma courses.

It is the Rule of 11, which was devised independently about 1890 by a Scot, Robert Foster, and an Englishman, E. M .

By what route the technique got into West Africa - or even whether it was independently devised there - cannot be ascertained until we have discovered more sites of the first millennium AD, and earlier in West Africa.

In Thursday's column, I mentioned that Stayman was devised independently by Jack Marx of London and George Rapée of New York, not by Sam Stayman.

By 1839, scientists in Britain and Russia had independently devised metal deposition processes similar to Brugnatelli's for the copper electroplating of printing press plates.