Top network posts

• 24 What precisely is a vacuous truth?
• 23 Are transcendental numbers computable?
• 15 A module over an algebra. Is it a vector space?
• 14 Show that $\sup(A \cup B)=\max\{\sup A,\sup B\}$
• 9 Empty space connected? If so, then what are its components?
• 9 Are $R=K[a,b,c,d]/(ad-bc, a^2c-b^3, bd^2-c^3, ac^2-b^2d)$ and $K[x^4,x^3y,xy^3,y^4]$ isomorphic?
• 8 Show that the ideal $I = (2,1+\sqrt{-13})$ is a maximal ideal in $\mathbb{Z}[\sqrt{-13}]$? Is it principal?
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