Law firm with an arbitration clause for the determination of the partners' equity interests. Exclusion of a partner. Arbitration proceedings closed before the determination of the partners' equity interests for failure to examine all elements of evidence and for "having been disregarded by the interested parties". Absence of "reiteration of the issue of the arbitration clause on appeal, rendering it precluded". Elements "of conviction [from the arbitration proceedings] presented up to that point may, at most, serve as a parameter for the enforcement phase of these proceedings, at which time a new expert examination shall establish the amounts to be paid":