He first went to Paris and it has often been assumed that his interest in Poincaré 's work started there. However, in his recently (1997) discovered autobiographical notes (see references), Heegaard indicates that he never met Poincaré and he laments that his visit to Paris was mathematically very disappointing.
Siya ang unang nagpunta sa Paris at ito ay madalas na assumed na ang kanyang interes sa Poincaré 's trabaho nagsimula doon. Gayunman, sa kanyang mga kamakailan-lamang (1997) natuklasan autobiographical tala (tingnan ang talahulugan), Heegaard nagpapahiwatig na hindi nakikita Poincaré siya at siya laments na ang kanyang pagbisita sa Paris ay mathematically very disappointing.