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Which mathematicians share a birthday with Conel Hugh O'Donel Alexander?

Fred Brooks

Fred Brooks

Frederick Phillips Brooks, Jr. (born April 19, 1931), the software engineer and computer scientist, best-known for managing the development of OS/360, then later writing candidly about the process in his seminal book The Mythical Man-Month

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James Cullen

Father James Cullen, S.J. (April 19, 1867 - December 7, 1933), born at Drogheda, County Louth, Ireland

wikipedia
Christian Reiher

Christian Reiher (born 1984 in Starnberg, Germany), the most successful participant of the International Mathematical Olympiad: He won four gold medals in the years 2000 to 2003 and a bronze medal in 1999

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Whatever is the birthday (day of the year on which the date of birth fell) of (Conel) Hugh O'Donel Alexander (19 April 1909 - 15 February 1974), the British cryptanalyst and chess player is the birthday of which other mathematician, a computer or mathematical sciences workers?

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I followed this chain of reasoning:

I know from locally stored knowledge that:
the 19th of April is the birthday of Christian Reiher ([fact: ["generated.867391712@trueknowledge.com"]])

permanent applies to is the birthday of ([fact: ["1152640@trueknowledge.com"]])

By calculation (generator: ["tpintersect@trueknowledge.com"]) I know that:
all time is the timeperiod intersection of all time and all time

By calculation (generator: ["same_left_value@trueknowledge.com"]) I know that:
Fact 1: Christian Reiher is something with the same left value for the relation as is the birthday of and Conel Hugh O'Donel Alexander

Fact 1 is true for all time

Therefore (generator: ["equals1@trueknowledge.com"]):
Christian Reiher is not the same as Conel Hugh O'Donel Alexander

I know from locally stored knowledge that:
Christian Reiher is a mathematician ([fact: ["141598725@trueknowledge.com"]])

By calculation (generator: ["same_left_value@trueknowledge.com"]) I know that:
Fact 1: Fred Brooks is something with the same left value for the relation as is the birthday of and Conel Hugh O'Donel Alexander

Fact 1 is true for all time

Therefore (generator: ["equals1@trueknowledge.com"]):
Fred Brooks is not the same as Conel Hugh O'Donel Alexander

I know from locally stored knowledge that:
Fred Brooks is a mathematician ([fact: ["683705844@trueknowledge.com"]])

By calculation (generator: ["same_left_value@trueknowledge.com"]) I know that:
Fact 1: James Cullen is something with the same left value for the relation as is the birthday of and Conel Hugh O'Donel Alexander

Fact 1 is true for all time

Therefore (generator: ["equals1@trueknowledge.com"]):
James Cullen is not the same as Conel Hugh O'Donel Alexander

I know from locally stored knowledge that:
James Cullen is a mathematician ([fact: ["433303332@trueknowledge.com"]])

I used the following facts to provide this answer:

Christian Reiher is or has been a mathematician

agree disagree edit

Fred Brooks is or has been a mathematician

agree disagree edit

James Cullen is or has been a mathematician

agree disagree edit

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