Heinz Hopf, German-Swiss mathematician and academic (b. 1894)
Heinz Hopf (19 November 1894 – 3 June 1971) was a German mathematician who worked on the fields of topology and geometry.

1971Jun, 3
Heinz Hopf
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Events on 1971
- 8Jan
Zulfikar Ali Bhutto
Bowing to international pressure, President of Pakistan Zulfikar Ali Bhutto releases Bengali leader Sheikh Mujibur Rahman from prison, who had been arrested after declaring the independence of Bangladesh. - 25Mar
Operation Searchlight
Bangladesh Liberation War: Beginning of Operation Searchlight by the Pakistan Armed Forces against East Pakistani civilians. - 11Jul
Chile
Copper mines in Chile are nationalized. - 21Sep
Bhutan
Bahrain, Bhutan and Qatar join the United Nations. - 24Nov
D. B. Cooper
During a severe thunderstorm over Washington state, a hijacker calling himself Dan Cooper (aka D. B. Cooper) parachutes from a Northwest Orient Airlines plane with $200,000 in ransom money. He has never been found.

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