Adding some more rigour to a simple exercise in Hartshorne
1686
Show that quotient rings are not isomorphic
92835
Add air resistance to projectile motion
84799
Determine safety of exercise hash functions
81481
Work done by moving up an inclined plane
79782
Exercising an option without paying for the underlying
11413
Comparing packages which facilitate typesetting exercises and solutions: exercise vs. answers vs. probsoln
48623
The Role of Rigor
66148
Adding Extra weight to order total
1531
Exercise from Geometry of algebraic curves by Arbarello, Cornalba, Griffiths, Harris
43350
Schwarz's Lemma exercise
7865
Complete Newbie: Axiom of Foundation Exercise
103969
Exercise 3.39 of Fulton & Harris
59201
How to present a vertical multiplication/addition
29515
How to simulate a rope?
144362
The construction of a Vitali set
157334
A valid floor function trick?
26138
Atiyah Macdonald Exercise 5.22