{"content":"「高校数学からちょっと発展したくらいの数学」が一番受けてそうね．","created_at":1790255606,"id":"3db264407e2d33d9708bc7b075b5e854f6f85387525da59407abf55047e4e70a","kind":1,"pubkey":"b75ef7bde2d6319f278727ac2cc4a7fdbeae2370cad22de960dd6ecfe0545a1b","sig":"5e76e92aaae121331e1f37bb5c2b46d88e2f6767a428ae39aa52e123b32cea3ebca072aa2ec947a4dcf77de8320d8a4e896cc81067f497892db7fb01fd9b40fb","tags":[]}