Obstruction

Obstruction theory studies the extentability of Maps using algebraic Gadgets. While theterminology rapidly becomes technical and convoluted (as Iyanaga and Kawada note, ``It is extremely difficult to discusshigher obstructions in general since they involve many complexities''), the ideas associated with obstructions are veryimportant in modern Algebraic Topology.

References

Iyanaga, S. and Kawada, Y. (Eds.). ``Obstructions.'' §300 in Encyclopedic Dictionary of Mathematics. Cambridge, MA: MIT Press, pp. 948-950, 1980.

• Major Axis
• Major Triangle Center
• Makeham Curve
• Malfatti Circles
• Malfatti Points
• Malfatti's Right Triangle Problem
• Malfatti's Tangent Triangle Problem
• Malliavin Calculus
• Mallow's Sequence
• Malmstén's Differential Equation
• Maltese Cross
• Maltese Cross Curve
• Malthusian Parameter
• Mandelbar Set
• Mandelbrot Set
• Mandelbrot Tree
• Mangoldt Function
• Manifold
• Mantissa
• Map
• Map Coloring
• Mapes' Method
• Map Folding
• Mapping (Function)
• Mapping Space