PhD Scholarships Opportunities for the academic year 2022/2023 Call from the Mathematics Center of the University of Porto (CMUP): April 8th 2022 — May 2nd 2022 by 23h59 (GMT+1, Lisbon time). Opportunities for the academic year 2021/2022 Call from the Mathematics Center of the University of Porto (CMUP): May 4th 2021 — May 25th 2021 by 23h59 (GMT+1, Lisbon time). Call from the Center for Research and Development in Mathematics and Applications (CIDMA): June 9th 2021 — July 25th 2021 by 23h59 (GMT+1, Lisbon time). Call from the Centre of Mathematics of the University of Minho (CMAT): July 1st 2021 — July 16th 2021 by 17h00 (GMT+1, Lisbon time). Call from the Mathematics Center of the University of Porto (CMUP): July 28th 2021 — August 10th 2021 by 23h59 (GMT+1, Lisbon time). Call from the Centre of Mathematics of the University of Minho (CMAT): August 4th 2021 — August 17th 2021 by 23h59m (GMT+1, Lisbon time).