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• 11 When and how did the term "Nazi" start replacing the term "Germans" in the context of WW2?
• 6 Prove or disprove: If $A$ is $n\times n$ and $\exists\;m\in \Bbb{N}:\;A^m=I_n$, then $A$ is invertible.
• 6 What is the index of field extension $\mathbb{C}/\mathbb{R}$?
• 5 Let $H$ be a subgroup of a group $G$ and suppose that $g_1,g_2 ∈ G$. Prove that the following conditions are equivalent:
• 5 Is the washing hands in order to protect yourself from COVID-19 backed up by research?
• 5 Applications of one of Serre's Theorems
• 5 Let $G$ be a polycyclic group and assume that every finite quotient of $G$ is nilpotent. Then $G$ is nilpotent
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