A unary Turing Machine X has input alphabet Σ and tape alphabet Γ. We represent the blank symbol belonging to the tape alphabet as _ . Given as input 11111 X writes 1_1_11_1 as output.
Is the blank symbol discarded when considering the output, ie. is the input equivalent to the output in this case (regardless of how many blanks and where they are placed (1_11_11 = 1111_1 = ... = 11111)) or are they differnt?