Volume LXII (2021)

Issue 1 I Issue 2 I Issue 3 I Issue 4

Issue 1

Pureté de la monade de Batanin, II
Pages 3-62
Jacques Penon

On the comparison of spans and biset
Pages 63-104
Ivo Dell’Ambrogio, James Huglo

Christian Lair (1945-2020), Bibliographie
Pages 105-113
Andrée Ehresmann, René Guitart

Issue 2

Integral and Differential structure on the free C-ring modality
Pages 116-176
Geoffrey Cruttwell, Jean-Simon Pacaud Lemay, Rory B. B. Lucyshyn-Wright

Diffeological Morita Equivalence
Pages 177-238
Nesta van der Schaaf

Corrections to: A construction of 2-filtered bicolimits of categories
Pages 239-242
Eduardo J. Dubuc, Ross Street

Issue 3

Globularly generated double categories II: the canonical double projection
Pages 243-302
Juan Orendain

The ample closure of the category of locally compact abelian groups
Pages 303-328
Wolfgang Rump

Examples and non-examples of integral categories and the admissible intersection property
Pages 329-354
Souheila Hassoun, Amit Shah, Sven-Ake Wegner

Regular and effective regular categories of locales
Pages 355-371
Panagis Karazeris, Konstantinos Tsamis

Issue 4

A Mal’tsev glance at the fibration ( )0 : CatEE of internal categories
Pages 375-408
Dominique Bourn

A sketch for derivators
Pages 409-450
Giovanni Marelli

A basis theorem for 2-rigs and rig geometry
Pages 451-490
Matías Menni

Order convergence and convergence in the interval topology in the presence of compactoidness
Pages 491-496
Frédéric Mynard