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Apr 5 at 11:15 vote accept Lajos Soukup
Apr 4 at 8:29 answer added bof timeline score: 8
Apr 4 at 6:48 comment added Lajos Soukup @bof Thank you, I corrected (it was too early here in Hungary when I wrote my first silly answer).
Apr 4 at 6:46 history edited Lajos Soukup CC BY-SA 4.0
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Apr 4 at 4:50 comment added Lajos Soukup @bof yes, the family of pairs of countable ordinals
Apr 3 at 18:47 history asked Lajos Soukup CC BY-SA 4.0