Kernel formation (Ex)
From Manifold Atlas
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Exercise 0.1. What is the kernel formation of the degree 1 normal map of the
dimensional Lens space
![3](/images/math/0/9/9/0994084a0f5f0cf820f737bbeca8a4b0.png)
![\displaystyle (f,b): L(m,n)^3 \longrightarrow S^3?](/images/math/c/9/a/c9ae98f78f396e17e27f0ece3ac8f5ba.png)
Exercise 0.2.
Find trivial formations for (Hint: Use the result in the Exercise 0.1)
Exercise 0.3.
Similarly, write down a boundary formation for .