A fascinating story of co-mentoring
All three Dr. Biswas' CVs list Dr. Martinez as a PhD student co-mentored by Dr. Biswas.
Here at UMBC
co-mentor
and
co-advisor
is a person who directs the dissertation research of a PhD student.
All the advisors/co-advisors are listed on the PhD thesis.
The PhD abstract of
Dr. Martinez (see page 2 of the link) lists Dr. Jolly only as the advisor.
While customs at Indiana University may be different from those of
UMBC another abstract of a former IU graduate student,
Dr. Cheng, lists two advisors, Dr. Jolly and Dr. Temam.