Deaths on April 9

Leopold Vietoris

Died on April 9, 2002

Leopold Vietoris, Austrian soldier, mathematician, and academic (b. 1891)

Leopold Vietoris (; German: [viːˈtoːʀɪs]; 4 June 1891 – 9 April 2002) was an Austrian mathematician, World War I veteran and supercentenarian. He was born in Radkersburg and died in Innsbruck.

He was known for his contributions to topology—notably the Mayer–Vietoris sequence—and other fields of mathematics, his interest in mathematical history and for being a keen alpinist.

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Leopold Vietoris

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Events on 2002

16 Jan

Osama bin Laden
The UN Security Council unanimously establishes an arms embargo and the freezing of assets of Osama bin Laden, al-Qaeda, and the remaining members of the Taliban.
4 Apr

Angolan Civil War
The Angolan government and UNITA rebels sign a peace treaty ending the Angolan Civil War.
14 Apr

Hugo Chávez
Venezuelan President Hugo Chávez returns to office two days after being ousted and arrested by the country's military.
12 May

Fidel Castro
Former US President Jimmy Carter arrives in Cuba for a five-day visit with Fidel Castro, becoming the first President of the United States, in or out of office, to visit the island since Castro's 1959 revolution.
20 Aug

Saddam Hussein
A group of Iraqis opposed to the regime of Saddam Hussein take over the Iraqi Embassy in Berlin, Germany for five hours before releasing their hostages and surrendering.

Deaths on April 9

Leopold Vietoris

Died on April 9, 2002

References

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Events on 2002

Osama bin Laden

Angolan Civil War

Hugo Chávez

Fidel Castro

Saddam Hussein