Zoom Talk by Harrington

Dear all,

   A talk about Harrington’s notes on “the hyperdegrees of reals in pruducts of uncountable Σ11 sets ” is going to be delivered by Yongyuan Yu at 4:00pm, 27 April (GMT, 8:00am), Zoom ID:485 023 3793 password:112233
You are welcome to attend in the talk.
 
Best,
Liang

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