A < B returns
an array with elements set to logical 1 (true)
where A is less than B; otherwise,
the element is logical 0 (false).
The test compares only the real part of numeric arrays. lt returns
logical 0 (false) where A or B have
NaN or undefined categorical elements.

lt(A,B) is
an alternate way to execute A < B, but is rarely
used. It enables operator overloading for classes.

A — Left arrayscalar | vector | matrix | multidimensional array

Left array, specified as a scalar, vector, matrix, or multidimensional
array. Inputs A and B must be
the same size unless one is a scalar. A scalar value expands to be
the same size as the other array.

If one input is an ordinal categorical array, the other input
can be an ordinal categorical array, a cell array of strings, or a
single string. A single string expands into a cell array of strings
of the same size as the other input. If both inputs are ordinal categorical
arrays, they must have the same sets of categories, including their
order. See Compare Categorical Array Elements for more details.

If one input is a datetime array, the other input can be a datetime
array, a date string, or a cell array of date strings.

If one input is a duration array, the other input can be a duration
array or a numeric array. The operator treats each numeric value as
a number of standard (86400 s) days.

B — Right arrayscalar | vector | matrix | multidimensional array

Right array, specified as a scalar, vector, matrix, or multidimensional
array. Inputs A and B must be
the same size unless one is a scalar. A scalar value expands to be
the same size as the other array.

If one input is an ordinal categorical array, the other input
can be an ordinal categorical array, a cell array of strings, or a
single string. A single string expands into a cell array of strings
of the same size as the other input. If both inputs are ordinal categorical
arrays, they must have the same sets of categories, including their
order. See Compare Categorical Array Elements for more details.

If one input is a datetime array, the other input can be a datetime
array, a date string, or a cell array of date strings.

If one input is a duration array, the other input can be a duration
array or a numeric array. The operator treats each numeric value as
a number of standard (86400 s) days.