Portrait of Lotfi A. Zadeh

Birthday profile

Lotfi A. Zadeh

Lotfi Zadeh, Iranian-American mathematician and computer scientist and founder of fuzzy logic (died 2017)

Born
February 4, 1921
Died
September 6, 2017
Zodiac sign
Aquarius
Birth year
1921

About Lotfi A. Zadeh

Lotfi Aliasger Zadeh (; Azerbaijani: Lütfəli Rəhim oğlu Ələsgərzadə; Persian: لطفی علی‌عسکرزاده; 4 February 1921 – 6 September 2017) was a mathematician, computer scientist, electrical engineer, artificial intelligence researcher, and professor of computer science at the University of California, Berkeley. Zadeh is best known for proposing fuzzy mathematics, consisting of several fuzzy-related concepts: fuzzy sets, fuzzy logic, fuzzy algorithms, fuzzy semantics, fuzzy languages, fuzzy control, fuzzy systems, fuzzy probabilities, fuzzy events, and fuzzy information. Zadeh was a founding member of the Eurasian Academy. It also instilled in me a deep desire to live in the United States." During this time, Zadeh was awarded several patents. Zadeh was awarded a Guggenheim Fellowship in 1967 for Natural Sciences in Applied Mathematics. As a student, he ranked first in his class in his first two years.

Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.

The world when Lotfi A. Zadeh was born

Lotfi A. Zadeh was born in 1921. The year snapshot below places that birthday in its cultural and historical setting: the music and films people were following, the headlines shaping public life, and the everyday prices families encountered.

Culture in 1921

  • #1 song"My Man" – Fanny Brice
  • Top movieThe Kid (Charlie Chaplin)
  • Best-selling bookMain Street – Sinclair Lewis

Headlines and milestones

  • Major sports momentJack Dempsey vs Georges Carpentier — first million-dollar gate
  • Top headlineWarren G. Harding inaugurated as 29th President
  • Technology milestoneAlbert Einstein wins the Nobel Prize in Physics
  • Defining fadOuija boards
  • Notable inventionLie detector (polygraph)
  • World population1.88 billion

United States snapshot

  • U.S. leaderWarren G. Harding
  • Sports championNew York Giants (World Series)
  • U.S. population108.5M

1921 versus 2026

These figures put everyday life in Lotfi A. Zadeh's birth year beside the site's latest United States snapshot.

Measure19212026
Gas$0.26$3.45/gal
Average home$5,500$435,000
Average income$3,010$67,500
Movie ticket$0.15$11.95
Postage stamp$0.02$0.73
Population108.5M341 million

Sources and editorial standards

This profile combines a biographical source with structured birthday and historical context. Sources recorded for this profile: Wikipedia, Encyclopaedia Britannica, Library of Congress, Wikidata. See our editorial policy for sourcing, corrections, and review standards.

Read the source biography on Wikipedia. Wikipedia text is available under the Creative Commons Attribution-ShareAlike License.