Last Updated：2022/12/24
In Section 4.3 we introduced the imaginary unit i with (i)²=-1, in the complex space domain. In section 4.4 we introduced the complex unit j with (j)²=-1, in connection with the time dependency of the shape (4.4.16) of the swimming profile. These different imaginary units have no interaction, we leave unaltered the product ij.
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In
Section
4.3
we
introduced
the
imaginary
unit
i
with
(i)²=-1,
in
the
complex
space
domain.
In
section
4.4
we
introduced
the
complex
unit
j
with
(j)²=-1,
in
connection
with
the
time
dependency
of
the
shape
(4.4.16)
of
the
swimming
profile.
These
different
imaginary
units
have
no
interaction,
we
leave
unaltered
the
product
ij.
