Infinitesimal neighbourhood of a line congruence

Model 280

Material:	Constructor:	Category:
Fadenmodell	E.Kummer, Berlin	A VII 42-44; E I 24-26; K 3-5

Description

280-282: The types of infinitesimal neighbourhood of a line in a congruence of lines (infinitely thin bundle of lines)

Showcase of this model is Case number 9

References

Separataband im Mathematischen Institut, D 280.

Kummer, E.(1860). Monatsberichte Akademische Wissenschaft, Berlin, 30. Juli, p. 469-474.