Difference between r1.1 and the current
@@ -1,3 +1,9 @@
#noindex
##======오목성,concavity =,concavity . 오목성 concavityw
Sub:
로그오목성
Ggl:로그오목성 NN:로그오목성
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Opp: [[볼록성,convexity]]
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Red Ruby Wiki 
minus(U+2212): −
asymp equal(U+2243): ≃
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