ode>add_itransition (l,q) s</code> returns the LTSA obtained by adding initial transition to state <code>q</code>, with label <code>l</code> to LTSA <code>s</code>. Raises <code>Invalid_state</code> if <code>q</code> are is not a state of <code>s</code></p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-remove_state"><a href="#val-remove_state" class="anchor"></a><code><span><span class="keyword">val</span> remove_state : <span><a href="#type-state">state</a> <span class="arrow">