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Fibonacci, Leonardo

(Encyclopedia)Fibonacci, Leonardo lāōnärˈdō fēbōnätˈchē [key], b. c.1170, d. after 1240, Italian mathematician, known also as Leonardo da Pisa. In Liber abaci (1202, 2d ed. 1228), for centuries a standard...

Leonardo da Vinci

(Encyclopedia)Leonardo da Vinci də vĭnˈchē, Ital. lāōnärˈdō dä vēnˈchē [key], 1452–1519, Italian painter, sculptor, architect, musician, engineer, and scientist, b. near Vinci, a hill village in Tusc...

Callejas Romero, Rafael Leonardo

(Encyclopedia)Callejas Romero, Rafael Leonardo, 1943–2020, Honduran political leader, president of Honduras (1990–94). A member of the conservative National party, he served in various government and party posi...

Clark, Kenneth MacKenzie

(Encyclopedia)Clark, Kenneth MacKenzie (Lord Clark of Saltwood), 1903–83, English art historian, studied Oxford. After working with Bernard Berenson in Florence, Clark was keeper of the department of fine art at ...

Albertinelli, Mariotto

(Encyclopedia)Albertinelli, Mariotto märyôtˈtō älbārtēnĕlˈlē [key], 1474–1515, Italian painter. A product of the Florentine school of the High Renaissance, Albertinelli was influenced by Leonardo and Ra...

Boltraffio, Giovanni Antonio

(Encyclopedia)Boltraffio or Beltraffio, Giovanni Antonio jōvänˈnē äntôˈnyō bōlträfˈfyō, bāl– [key], 1467–1516, Italian painter, b. Milan. He was a pupil of Leonardo da Vinci, whose style he adhered...

sequence

(Encyclopedia)sequence, in mathematics, ordered set of mathematical quantities called terms. A sequence is said to be known if a formula can be given for any particular term using the preceding terms or using its p...

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