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3 years agoSummer “this year” started for the southern Hemisphere last December 21st. So minus those 9 days from the previous year, it doesn’t seem odd to say “Earth’s summer”, no?


Summer “this year” started for the southern Hemisphere last December 21st. So minus those 9 days from the previous year, it doesn’t seem odd to say “Earth’s summer”, no?
How could we prove the Riemann Hypothesis?