San Francisco Chronicle - (Sunday)

Frederick W. Cummings

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1,2,3 with a 1,1,1 now 0,3,1 with a 1,1,9. “How to make an entire career out of diagnonali­zation of a 2x2 matrix”

Frederick Williams Cummings died, at 87 years old, on Thursday January 31, 2019 in Marin County, CA. Surviving him are his wife, Kathleen J. Cummings, his daughter, Anne M. Cummings, his son-in-law Chanler M. Sparler, and three beloved grandchild­ren: Joshua C. Sparler of UC Berkeley, Madsen M. Sparler, and Kaela M. Sparler, also of Marin. He has one surviving sibling, Dorothy Burguieres, of Baton Rouge, LA and he is preceded in death by his brother, Alfred Cummings (whose daughters are Linda and Rebecca), and his sister, Kathleen “Kay” Endom Redmann (whose sons are John and Fred). Frederick’s aunt, Mildred M. Williams Becnel, also preceded him. He outlived his loving friend, Lynn Winter Duggan with whom he lived in San Anselmo, CA for 18 years. Frederick was born in Hotel Dieu, New Orleans, 11/21/1931 to Dorothy Stith Williams Cummings and Alfred J. Cummings, and died peacefully, surrounded by friends and family, including his long time close friend Victoria Nerenberg and her family, Mary Owen, and many others, on 1/31/19. Frederick died from complicati­ons of a fall which left him quadripleg­ic 6/2018. Frederick’s father, Alfred J. Cummings, was an Irish immigrant from Long Green Valley, Baltimore, and worked for WWL Radio Station in New Orleans. His mother, known as “Monks,” grew up on Bellechase rice plantation on the Mississipp­i, and the Williams/Stith family was from Memphis, Tennessee. His aunt Mildred, known as “Moonie,” was the bookkeeper for the Krewe of Rex for Mardi Gras. Frederick had a disappoint­ing early education at Holy Name Elementary and Jesuit High in New Orleans, where his transcript was stamped “not appropriat­e for college-level work.” He was raised by his mother and father and Ernestine. Ernestine later left to work in the shipyards of Oakland, and she, along with others, woke him to the injustice of the Jim Crow South. He also served two years on the front line in Korea with the US Army, where he first read Einstein’s Relativity from the Catholic Church’s banned book list. Upon his return, he attended LSU (1955). There he met Joe Levinger, who inspired him to pursue physics. He excelled in chess, track and field, and painting street scenes in the French Quarter. But his greatest talent was asking “why?”. Frederick was restless in his pursuit of hows and whys of the world around him, and was often unsatisfie­d with the answers he was given. He had seen the Bay Area while shipping out to Korea and sworn to himself that he would someday live by the Bay. So he jumped at the chance to attend Stanford University in Palo Alto where he worked with Joe Eberly and Carlos Stroud. There he received his PhD in 1960. He was part of the physics department during Stanford’s exciting early years and worked at Ford’s Aeronutron­ic in Newport Beach until he took a faculty position with UC Riverside (1963-1993). He taught both undergradu­ate and graduate students and has many graduate students around the world. He was active with the Aspen Center for Physics from its inception and for many summers, where he worked closely with Peter Kaus, Syd Meshkoff, Mike Simmons, Murray Gell-Mann, Lenny Susskind, A.K. Rajagopal, and others. Frederick is best known for the JaynesCumm­ings Model (1960 thesis and paper in IEEE 1963) a theoretica­l model in quantum optics that describes the fundamenta­l action of a two-level atom with a quantized mode of an optical cavity. This model later led Serge Haroche to a Nobel Prize in lasers in 2012. UC Riverside is also where Frederick met his fabulous and adventurou­s wife, Kathleen Joyce Sturgis of Riverside, CA. With her he has shared love, travel, and many laughs. His course, “Physics for Non-Physicists” was improved upon by Jose Wudka and is now a textbook titled Space-Time, Relativity, and Cosmology. It was on a sabbatical in England in 1976 where he met Brian Goodwin at a party. Goodwin appreciate­d the eccentric unicorn shirt in which Kathleen had dressed Frederick. Goodwin, Gerry Webster, Maynard Smith and others then began a 30-year collaborat­ion in the new field of theoretica­l biology, investigat­ing developmen­tal biology. This union produced many papers about growth and morphogene­sis, including a unifying theory of early cell developmen­t based on adhesion molecules in plants and animals. Frederick was working on a paper when he fell in 2018, which is still incomplete. Fred was also an avid advocate for peace and justice. He was a foot soldier for the Student Nonviolent Coordinati­ng Committee (SNCC or “SNIK”), building a community center in Jackson, MS in the summer of 1964. There he met Rosa Parks, John Lewis, Bob Moses, Edie Black, and others as documented in the Mississipp­i Notebook. Frederick even fetched a Coke for Fannie Lou Hamer. While working at UC Riverside, he lived in Laguna Beach. He later moved to Berkeley, CA, where he continued his work for the environmen­t and joined Save the Children. Frederick eventually ended up in Marin County, where he hiked the trails of Madrone Canyon, Samuel P Taylor Park, and Phoenix Lake. In lieu of flowers, please donate to your state park.

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