Let S ⊆ R and let G be an arbitrary isometry of R . Prove that
the symmetry group of G(S) is isomorphic to the symmetry group of
S. Hint: If F is a symmetry of S, what is the corresponding
symmetry of G(S)?
Hello, I am using BASH. I need to write a conditional statement
using grep. I want the computer to echo true if it detects any
numerical character in the first line of StrepList.txt. However,
the computer tells me that "grep: [0-9]: No such file or
directory"
if (head -n 1 StrepList.txt | grep -o [0-9] -eq TRUE);then
echo "Contains numbers"
else
echo "No numbers"
fi