. ▁Her ▁dis sert ation ▁concerned ▁partial ▁differential ▁equations , ▁and ▁was ▁super vised ▁by ▁Eug ene ▁Barry ▁Fab es ; ▁it ▁was ▁B ounds ▁for ▁the ▁Fund amental ▁Sol utions ▁of ▁D eg ener ate ▁Par abol ic ▁Part ial ▁D iffer ential ▁Equ ations . ▁She ▁joined ▁the ▁Car leton ▁College ▁fac ulty ▁in ▁the ▁same ▁year . ▁ ▁Books ▁Nelson ▁is ▁the ▁author ▁of ▁two ▁text books ▁in ▁mathematics : ▁Rec urrence ▁and ▁Top ology ▁( with ▁John ▁M . ▁Al ong i , ▁Gr adu ate ▁Studies ▁in ▁Mathemat ics ▁ 8 5 , ▁American ▁Mathemat ical ▁Society , ▁ 2 0 0 7 ), ▁on ▁dynam ical ▁systems . ▁A ▁User - Fri end ly ▁Introduction ▁to ▁Leb es gue ▁Me asure ▁and ▁Integr ation ▁( Student ▁Mathemat ical ▁Library ▁ 7 8 , ▁American ▁Mathemat ical ▁Society , ▁ 2 0 1 5 ), ▁on ▁Leb es gue ▁integration . ▁She ▁is ▁also ▁the ▁editor - in - ch ief ▁of ▁the ▁" Problem ▁Books " ▁book ▁series ▁of ▁the ▁Mathemat ical ▁Association ▁of ▁America . ▁ ▁References ▁ ▁External ▁links ▁Home ▁page ▁ ▁Category : 1 9 5 9 ▁birth s ▁Category : L iving ▁people ▁Category : 2 0 th - century ▁American ▁mathemat icians ▁Category : 2 1 st - century ▁American ▁mathemat icians ▁Category : American ▁women ▁mathemat icians ▁Category : Univers ity ▁of ▁North ▁Dak ota ▁al umn i ▁Category : Univers ity ▁of ▁Minnesota ▁al umn i ▁Category : Car leton