CLPS will host its Third Masterclass in the Philosophy of Mathematical Practice on June, 19-21 with Prof. Dr. Marcus Giaquinto. The Masterclass will be composed of three lectures, the tentative titles of which are as follows:

**Lecture 1** (Wednesday, 19/6): A priori and a posteriori in mathematics.

**Lecture 2** (Thursday, 20/6): Is the distinction between proofs and non-proofs in mathematics objective?

**Lecture 3** (Friday, 21/6): Can mathematical arguments have aesthetic value?

We intend the Masterclass to be a fully interactive event, with the twofold objective to understand in depth the materials presented in the lectures, and to provide early career researchers (PhD students and Postdocs) with an opportunity to discuss their ongoing work in a helpful and constructive environment. The lectures by Marcus Giaquinto will take place in the mornings, and will be followed by afternoon sessions with presentations by early career researchers in the Philosophy of Mathematical Practice.

*The Masterclass is supported by the Strategic Research Program entitled “Logic and Philosophy of Mathematical Practices” (SRP22) of the Vrije Universiteit Brussel (VUB), the Doctoral School of Human Sciences (DSh) of the VUB, and the Association for the Philosophy of Mathematical Practice (APMP).*