My great-grandmother Etine Imke Smid and her paranymphs at her PhD ceremony in 1914. She studied both mathematics and astronomy and was the first Dutch woman to receive a PhD in astronomy.
Women in Mathematics:
Co-founder and member of WISE (Women in Science Endeavour) at Utrecht University. The idea was to organize a bi-annual activity for women in math/science.
Contributor to a project about good practices for more diverse teaching at Utrecht University.
Member of WiMgo (Women in Maths Göttingen)