In "The completely mixed state" subsection, there is an error in the probability specifications for the state |1>. Screenshot attached, with error circled and an arrow indicating where the error is corrected just below the error in the text.
ERROR:
If the state is |1>, we obtain the outcomes 0 and 1 with probabilities
|<0|U|1>|^2 and |<1|U|0>|^2
CORRECTION:
If the state is |1>, we obtain the outcomes 0 and 1 with probabilities
URL to relevant documentation: https://learning.quantum.ibm.com/course/general-formulation-of-quantum-information/density-matrices
In "The completely mixed state" subsection, there is an error in the probability specifications for the state |1>. Screenshot attached, with error circled and an arrow indicating where the error is corrected just below the error in the text.
ERROR:
If the state is |1>, we obtain the outcomes 0 and 1 with probabilities
CORRECTION:
If the state is |1>, we obtain the outcomes 0 and 1 with probabilities