A Systematic Way to find Counter Examples? via Linear Algebra
98391
example of a nonempty subset is closed under scalar multiplication but not a subspace
110799
Task interpretation for Hoffman Kunze Linear Algebra exercise 1 (b) sec. 3.6
145388
Structural Induction: Metalogic Proof
42141
Proving Distributivity of Matrix Multiplication
62724
The clearest way to represent Mathematica's evaluation sequence
43626
Open Mapping Theorem: counterexample
116823
VERIFYING: Proving an $n \times n$ Matrix Vector Space
72077
''Linear'' transformations between vector spaces over different fields .
43962
Penguin Brainteaser : 321-avoiding permutations
125811
Recognizing special cases of a defined function for permuted arguments
137012
Mathematical Induction for Recurrence Relation
125435
Practical application for linear transformations
74839
Catalan numbers: bijection between applications of a binary operator and Dyck words.
8970
Proving the cross product matrix tranformation identity with an alternative solution
72391
linear dependence proof using subsets
118293
Strategy for determining the number of homomorphisms between two Groups
62751
Finding recurrence formulas from procedural code and output lists associated with integer sequences