Why Does Munkres Use 3 Delta Instead of Delta in Exercise 22.12?

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SUMMARY

Munkres uses 3 δ instead of δ in Exercise 22.12 to emphasize the distinction in the topology being discussed. The substitution of δ for 3 δ is valid, but it may overlook specific nuances in the exercise's requirements. Understanding this choice is crucial for accurately applying the concepts of topology presented in Munkres' textbook.

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[SOLVED] Munkres Exercise 22.12

Homework Statement


Please stop reading unless you have Munkres topology textbook.
Why does Munkres use 3 \delta instead of \delta in part b? I get that replacing the 3 \delta by \delta works fine.

Homework Equations


The Attempt at a Solution

 
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\delta does seem to work fine...
 

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