  The wave-particle duality, as one of the expressions of Bohr complementarity,
is usually quantified by path predictability and the visibility of interference
fringes. With the development of quantum resource theory, the quantitative
analysis of wave-particle duality is increasing, most of which are expressed in
the form of specific functions. In this paper, we obtain the path information
measure for pure states by converting the coherence measure for pure state into
a symmetric concave function. Then we prove the function as a path information
measure is also valid for mixed states. Furthermore, we also establish a
generalized wave-particle-mixedness traility. Although the mixedness proposed
in the text is not a complete mixedness measure, it also satisfies some
conditions of mixdness measure. From the perspective of resource theory, the
path information we establish can be used as the measure of the resource of
predictability, and the triaility relationship we establish reveals the
relationship among coherence, predictability, purity and mixdness degree to a
certain extent. According to our method, given either coherence measure or path
information, a particular form of wave-particle-mixedness traility can be
established. This will play an important role in establishing connections
between wave, particle and other physical quantifiers.
