- Springer-Verlag. ISBN 0-387-97926-3. Engelking,
Ryszard (1989).
General Topology.
Heldermann Verlag, Berlin. ISBN 3-88538-006-4. Kaplansky,
Irving (2001). Set Theory...
- Horst; Strecker,
George E. (2004).
Abstract and
Concrete Categories.
Heldermann Verlag Berlin. Awodey,
Steve (2010).
Category Theory.
Oxford University...
- Topology.
Princeton University Press.
Ryszard Engelking,
General Topology,
Heldermann Verlag,
Sigma Series in Pure Mathematics,
December 1989, ISBN 3-88538-006-4...
- "Sets, classes, and conglomerates" (PDF),
Category theory (3rd ed.),
Heldermann Verlag, pp. 9–12 abeq2 –
Metamath Proof Explorer, us.metamath.org, 1993-08-05...
- 2021-10-12.
Willard 1970,
Section 17. Engelking, Ryszard,
General Topology,
Heldermann Verlag Berlin, 1989. ISBN 3-88538-006-4 Kemoto,
Nobuyuki (2004). "Higher...
- [math.CT]. Herrlich,
Horst and Strecker,
George E.,
Category Theory,
Heldermann Verlag (2007).
Wikimedia Commons has
media related to
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- web}}: CS1 maint:
archived copy as
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Heldermann, Florenz;
Heldermann, Florenz;
Heldermann, Florenz; Hahn, Ines. "The AVUS".
Archived from the...
- und
Kategorien in der Musik:
Entwurf einer mathematischen Musiktheorie.
Heldermann. ISBN 978-3-88538-210-2.
Retrieved 26
February 2012. Mazzola, Guerino;...
-
nonlinear programming.
Sigma Series in
Applied Mathematics. Vol. 3. Berlin:
Heldermann Verlag. pp. xlviii+629 pp. ISBN 978-3-88538-403-8. MR 0949214. Archived...
- Engelking,
Ryszard (1989).
General Topology.
Sigma Series in Pure Mathematics, Vol. 6 (Revised and completed ed.).
Heldermann Verlag, Berlin. ISBN 3885380064....