Kernel formation (Ex)

Exercise 1: What is the kernel formation of the degree 1 normal map of the $3$$<wikitex>; '''Exercise 1:''' What is the kernel formation of the degree 1 normal map of the $ dimensional Lens space $$(f,b): L(m,n)^3 \longrightarrow S^3$$ </wikitex> == References == {{#RefList:}} [[Category:Exercises]]3$ dimensional Lens space

$\displaystyle (f,b): L(m,n)^3 \longrightarrow S^3$ $$\displaystyle (f,b): L(m,n)^3 \longrightarrow S^3$$