Complex sentence: According to the Srikula tradition, she is the foremost of the Dasha-Mahavidyas, and all the other Mahavidyas concludes in her vidya i.e. Sri Vidya.
Split into simpler sentences: According to the Srikula tradition, she is the foremost of the Dasha-Mahavidyas. All other Mahavidyas concludes in her vidya i.e. Sri Vidya.