A thesis esetleg kihagyható, ha úgy is egyértelmű.

"External Thesis Advisor Info

Students with thesis advisors outside the department must continue to have an internal advisor. The internal advisor serves as the registration advisor and must be kept informed of the student's research progress on a regular basis.

Each semester, by the end of the 10th week (Drop Date), the student submits a report via email or on paper to the Math Academic Services Office, with a cover sheet signed by the internal and external advisors. This report is forwarded to the appropriate committee chair and is required to obtain the grade of J (satisfactory) in thesis research, 18.THG, at the end of the semester."
http://math.mit.edu/academics/grad/timeline/advisor.html

"Candidates will continue to work independently on their thesis research in their own studio for 90 hours over the course of the semester under the guidance of an external advisor or mentor from outside the College faculty. Candidates start identifying potential external advisors during the previous summer term in consultation with the Graduate Program Manager. The external advisor must be approved by the Graduate Program Manager and all forms filled out and filed by the candidate prior to the end of add/drop period. A minimum number of three individual one-hour meetings between the external advisor and the candidate are required. A grade will be submitted by the Graduate Program Manager after receiving a summary report from the external advisor."
http://www.moore.edu/site/graduate_programs/mfa_studio_arts/...

Itt olvasható egy magyarázat a supervisor és as advisor különbségéről:
http://dalgrad.dal.ca/regulations/viii/