▁ 1 : 1 2 0 0 0 0 ▁top ographic ▁map . ▁ ▁T roy an : ▁Man fred ▁W ör ner ▁Foundation , ▁ 2 0 0 9 . ▁ ▁References ▁ ▁St . ▁Ivan ▁R il ski ▁Col . ▁SC AR ▁Compos ite ▁Ant ar ctic ▁Gazette er ▁ ▁Bulgar ian ▁Ant ar ctic ▁Gazette er . ▁Ant ar ctic ▁Place - names ▁Commission . ▁( details ▁in ▁Bulgar ian , ▁basic ▁data ▁in ▁English ) ▁ ▁External ▁links ▁ ▁St . ▁Ivan ▁R il ski ▁Col . ▁Cop ern ix ▁satellite ▁image ▁ ▁Category : T ang ra ▁Mountains <0x0A> </s> ▁Er ica ▁F lap an ▁( born ▁August ▁ 1 4 , ▁ 1 9 5 6 ) ▁is ▁an ▁American ▁math ematic ian , ▁the ▁L ing urn ▁H . ▁Bur k head ▁Professor ▁of ▁Mathemat ics ▁at ▁Pom ona ▁College . ▁ ▁Education ▁and ▁career ▁F lap an ▁did ▁her ▁under grad uate ▁studies ▁at ▁Hamilton ▁College ▁( New ▁York ), ▁gradu ating ▁in ▁ 1 9 7 7 , ▁and ▁went ▁on ▁to ▁gradu ate ▁studies ▁at ▁the ▁University ▁of ▁Wisconsin – Mad ison , ▁ear ning ▁a ▁Ph . D . ▁in ▁ 1 9 8 3 ▁under ▁the ▁super vision ▁of ▁Daniel ▁Mc Mill an . ▁ ▁After ▁post do ctor al ▁studies ▁at ▁R ice ▁University ▁and ▁the ▁University ▁of ▁California , ▁Santa ▁Barbara ▁she ▁joined ▁the ▁Pom ona ▁fac ulty ▁in ▁ 1 9 8 6 . ▁F lap an '