Re: Death of Ronnie Brown.

Dear Tim, My condolences to you and his family; I met Marcus once, at Ronnie’s home. I am deeply indebted to Ronnie, for his work on homotopy, groupoids and higher groupoids. He combined and interwove algebraic topology and category theory in profound ways; his enthusiasm was engaging. Marco ---------- You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. Leave group: https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.ashx?source=EscalatedMessage&action=leave&GuestId=6bf90c14-94d1-45b7-a0b5-9dd447734d27