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Gerhard Gentzen was born on 24 November, 1909 in Greifswald, Germany, is a German mathematician. Discover Gerhard Gentzen's Biography, Age, Height, Physical Stats, Dating/Affairs, Family and career updates. Learn How rich is he in this year and how he spends money? Also learn how he earned most of networth at the age of 35 years old?

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Age 35 years old
Zodiac Sign Sagittarius
Born 24 November 1909
Birthday 24 November
Birthplace Greifswald, Germany
Date of death 4 August, 1945
Died Place Prague, Czechoslovakia
Nationality Germany

We recommend you to check the complete list of Famous People born on 24 November. He is a member of famous mathematician with the age 35 years old group.

Gerhard Gentzen Height, Weight & Measurements

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Gerhard Gentzen Net Worth

His net worth has been growing significantly in 2023-2024. So, how much is Gerhard Gentzen worth at the age of 35 years old? Gerhard Gentzen’s income source is mostly from being a successful mathematician. He is from Germany. We have estimated Gerhard Gentzen's net worth, money, salary, income, and assets.

Net Worth in 2024 $1 Million - $5 Million
Salary in 2024 Under Review
Net Worth in 2023 Pending
Salary in 2023 Under Review
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Source of Income mathematician

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Timeline

1909

Gerhard Karl Erich Gentzen (24 November 1909 – 4 August 1945) was a German mathematician and logician.

He made major contributions to the foundations of mathematics, proof theory, especially on natural deduction and sequent calculus.

1933

Bernays was fired as "non-Aryan" in April 1933 and therefore Hermann Weyl formally acted as his supervisor.

Gentzen joined the Sturmabteilung in November 1933, although he was by no means compelled to do so.

Nevertheless, he kept in contact with Bernays until the beginning of the Second World War.

1935

In 1935, he corresponded with Abraham Fraenkel in Jerusalem and was implicated by the Nazi teachers' union as one who "keeps contacts to the Chosen People."

In 1935 and 1936, Hermann Weyl, head of the Göttingen mathematics department in 1933 until his resignation under Nazi pressure, made strong efforts to bring him to the Institute for Advanced Study in Princeton.

Between November 1935 and 1939 he was an assistant of David Hilbert in Göttingen.

1936

Gentzen proved the consistency of the Peano axioms in a paper published in 1936.

This was done by a direct proof of the unprovability of the principle of transfinite induction, used in his 1936 proof of consistency, within Peano arithmetic.

The principle can, however, be expressed in arithmetic, so that a direct proof of Gödel's incompleteness theorem followed.

Gödel used a coding procedure to construct an unprovable formula of arithmetic.

1937

Gentzen joined the Nazi Party in 1937.

1939

In April 1939 Gentzen swore the oath of loyalty to Adolf Hitler as part of his academic appointment.

In his Habilitationsschrift, finished in 1939, he determined the proof-theoretical strength of Peano arithmetic.

1943

From 1943 he was a teacher at the German Charles-Ferdinand University of Prague.

Under a contract from the SS, Gentzen worked for the V-2 project.

Gentzen's proof was published in 1943 and marked the beginning of ordinal proof theory.

1945

He died of starvation in a Czech prison camp in Prague in 1945, having been interned as a German national after the Second World War.

Gentzen was a student of Paul Bernays at the University of Göttingen.

Gentzen was arrested during the citizens uprising against the occupying German forces on 5 May 1945.

He, along with the rest of the staff of the German University in Prague were detained in a Soviet prison camp, where he died of starvation on 4 August 1945.

Gentzen's main work was on the foundations of mathematics, in proof theory, specifically natural deduction and the sequent calculus.

His cut-elimination theorem is the cornerstone of proof-theoretic semantics, and some philosophical remarks in his "Investigations into Logical Deduction", together with Ludwig Wittgenstein's later work, constitute the starting point for inferential role semantics.

One of Gentzen's papers had a second publication in the ideological Deutsche Mathematik that was founded by Ludwig Bieberbach who promoted "Aryan" mathematics.