2011
winner, PhD
1971,
Applied
Mathematics
It
was
40
years
ago
that
Ivan
defended
his
PhD
thesis
in
the
Department
of
Applied
Mathematics
of
the
University
of
Waterloo
and
graduated
with
a
PhD
degree.
Following
his
graduation
he
was
appointed
as
an
assistant
professor
in
the
Department
of
mathematics
of
the
Technical
university
in
Bratislava,
Slovakia
where
he
stayed
till
1980,
when
he
joined
the
Faculty
of
Mathematics
and
Physics
of
the
Comenius
University
in
Bratislava
as
an
associate
professor
of
theoretical
physics.
In
1989
he
became
a
full
professor
and
one
year
later
the
first
associate
dean
of
the
Faculty
of
Mathematics
and
Physics
of
the
Comenius
University.
Thanks
to
his
continuing
efforts
to
promote
the
field
of
quantum
chemistry
and
chemical
physics
which
he
chaired
until
his
retirement.
His
most
significant
scientific
achievement
has
been
undoubtedly
the
formulation
of
the
so-called
Brillouin-Wigner
(BW)
Coupled-Cluster
(CC)
theory
enabling
the
exploitation
of
CC
formalism
even
for
degenerate
and
quasi-degenerate
systems.
The
CC
theory
–
largely
developed
at
Waterloo
–
enables
a
reliable
and
accurate
description
of
the
molecular
electronic
structure
and
is
nowadays
referred
to
as
“the
gold
standard”
of
Quantum
Chemistry.
Its
BW
version
then
represents
its
important
variant
which
is
widely
exploited
and
quoted.
Recently,
Professor
Hubac
co-authored
a
monograph
on
this
subject
published
by
Springer
Verlag.
