"op">)</span></span>
<span><span class="fu">transf.ipft</span><span class="op">(</span><span class="va">xi</span>, <span class="va">ni</span><span class="op">)</span></span>
<span><span class="fu">transf.ipft.hm</span><span class="op">(</span><span class="va">xi</span>, <span class="va">targs</span><span class="op">)</span></span>
<span><span class="fu">transf.isqrt</span><span class="op">(</span><span class="va">xi</span><span class="op">)</span></span>
<span><span class="fu">transf.irft</span><span class=