At Weierstrass's request he was given a question on the paper he received in May 1840 on the representation of elliptic functions and he presented his own important research as an answer. Gudermann assessed the paper and rated Weierstrass's contribution:
Sa Weierstrass's request siya ay bibigyan ng isang katanungan sa papel niya na natanggap sa Mayo 1840 sa pagsasalarawan ng mga patambilog function at ipinapahayag niya ang kanyang sariling mahalagang pananaliksik bilang isang sagot. Gudermann tasahin ang papel at rated Weierstrass ng kontribusyon: