# Categories

- A
- Algebraic Curves and Surfaces
- B
- Combinatorical Geometry
- C
- Topology
- D
- Kinematics and Mechanics
- E
- Differential Geometry
- I
- Behavior of curves, surfaces, and line congruences on the infintely small scale
- The types of the development of a space curve at a small scale
- The types of the development of a space curve at a small scale
- The types of the development of a space curve at a small scale
- The types of the development of a space curve at a small scale
- The types of the development of a space curve at a small scale
- The types of the development of a space curve at a small scale
- The types of the development of a space curve at a small scale
- The types of the development of a space curve at a small scale
- The tangent surfaces belonging to models 163-170
- The tangent surfaces belonging to models 163-170
- The tangent surfaces belonging to models 163-170
- The tangent surfaces belonging to models 163-170
- The tangent surfaces belonging to models 163-170
- The tangent surfaces belonging to models 163-170
- The tangent surfaces belonging to models 163-170
- The tangent surfaces belonging to models 163-170
- Normal curvature circle in an elliptic surface point
- Normal curvature circle in a hyperbolic surface point
- Normal curvature circle in a parabolic point
- Two gypsum cylinders
- To the permutability of the differentiation sequence
- Infinitesimal neighbourhood of a line congruence
- Infinitesimal neighbourhood of a line congruence
- Infinitesimal neighbourhood of a line congruence
- Peano surface

- II
- Lines of curvature, asymptotic lines, geodesic lines, parabolic curve
- III
- Deformation theory
- IV
- Minimal surfaces
- V
- Surfaces of constant GauÃŸ or medial curvature
- VI
- Helicoids, sliding surfaces, curves and surfaces of constant breadth
- XX
- Others

- F
- Algebra
- G
- Analysis, Probability Theory
- H
- Theory of Functions of Complex Variables
- J
- Differential Equations, Wave Theory
- K
- Geometrical Optics
- L
- Instruments and Devices.
- M
- History of Mathematis and Astronomy
- Z
- Other