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May 6, 2018 at 16:08 comment added Franka Waaldijk So now I'll start thinking again about which natural extra conditions on $f$ would ensure a fixed point in the open ball...
May 6, 2018 at 16:07 comment added Franka Waaldijk thank you! I must admit I thought it was harder...but it's also very nice to get a short and clear answer. Cheers, Frank (I understand the vote to close, by the way...but that's how it sometimes goes)
May 6, 2018 at 16:04 vote accept Franka Waaldijk
May 6, 2018 at 12:42 review Low quality posts
May 6, 2018 at 12:47
May 6, 2018 at 12:26 history answered Michal Adamaszek CC BY-SA 4.0