tor-tag">b</span> c (sym c d q) (sym <span class="hljs-selector-tag">b</span> d (parallelAxiom <span class="hljs-selector-tag">a</span> <span class="hljs-selector-tag">b</span> d <span class="hljs-selector-tag">p</span> r))
</code></pre>
<p>其中 <code>Axiom</code> 用于表示公理，公理实际上就是一个包含类型信息的不可计算实例：</p>
<pre><code class="language-java"><span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Axiom</span> <span class="h