/ma.tʰ…Oh seems that I need to learn more about international phonetic alphabet…
The pronunciation given on the page is
(Classical) IPA: /ma.tʰeːˈma.ti.ka/, [ma.t̪ʰeːˈma.t̪ɪ.ka]
(Ecclesiastical) IPA: /ma.teˈma.ti.ka/, [ma.t̪ɛˈmaː.t̪i.ka]
If I understand the wikipedia page of international phonetic alphabet correctly, /tʰ/ is almost /t/, so the pronunciation of mathematica is matematica??