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commutative law

(Encyclopedia)commutative law, in mathematics, law holding that for a given binary operation (combining two quantities) the order of the quantities is arbitrary; e.g., in addition, the numbers 2 and 5 can be combin...

Brunschvicg, Léon

(Encyclopedia)Brunschvicg, Léon lāôNˈ brünˈshvēk [key], 1869–1944, French philosopher, b. Paris. From 1909 until his death he taught at the Sorbonne. Brunschvicg's philosophy, which has had considerable in...

Boltzmann, Ludwig

(Encyclopedia)Boltzmann, Ludwig lo͝otˈvĭkh bôltsˈmän [key], 1844–1906, Austrian physicist, b. Vienna, educated at Univ. of Vienna. He began teaching (1869) at Graz Univ. In 1873 he became mathematics profes...

Behaim, Martin

(Encyclopedia)Behaim, Behem, or Boeheim, Martin all: bāˈhīm [key], b. 1436? or 1459?, d. 1506?, German traveler and cosmographer. He studied (possibly under Regiomontanus) astronomy, navigation, and mathematics....

Stewart, Dugald

(Encyclopedia)Stewart, Dugald, 1753–1828, Scottish philosopher. He studied at the Univ. of Edinburgh, later becoming professor of mathematics (1775–85) and of moral philosophy (1785–1810). After retiring he d...

Monge, Gaspard, comte de Péluse

(Encyclopedia)Monge, Gaspard, comte de Péluse gäspärˈ môNzh kôNt də pālüzˈ [key], 1746–1818, French mathematician, physicist, and public official. He was distinguished for his geometrical research, whic...

Adams, John Couch

(Encyclopedia)Adams, John Couch, 1819–92, English astronomer, grad. St. John's College, Cambridge, 1843. By mathematical calculation based on irregularities in the motion of Uranus, he predicted the position of t...

Lacaille, Nicolas Louis de

(Encyclopedia)Lacaille, Nicolas Louis de nēkôläˈ lwē də läkäˈyə [key], 1713–62, French astronomer. As a result of his success in making meridional measurements in France under the patronage of the duke ...

Richardson, Lewis Fry

(Encyclopedia)Richardson, Lewis Fry, 1881–1953, British physicist and pioneering meteorologist, grad. Cambridge (1903), Univ. of London (B.Sc. 1929). Richardson worked at the National Physical Laboratory (1902–...

Sparks, Jared

(Encyclopedia)Sparks, Jared, 1789–1866, American historian and educator, b. Willington, Conn. He studied theology, mathematics, and natural philosophy at Harvard (1817–19). He was pastor of a Unitarian church i...