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<span class="kw">take </span>
<span class="p1"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"> the    <a href="finseq_2.html#M2" title="FINSEQ_2:mode.2">Element</a> of  the   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a>  <a href="finseq_2.html#K3" title="FINSEQ_2:func.3">*</a> </span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span>
; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> ( <span class="p1"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"> the    <a href="finseq_2.html#M2" title="FINSEQ_2:mode.2">Element</a> of  the   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a>  <a href="finseq_2.html#K3" title="FINSEQ_2:func.3">*</a> </span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span> is  <a href="zfmisc_1.html#V1" title="ZFMISC_1:attr.1">trivial</a>  &amp; <span class="p1"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"> the    <a href="finseq_2.html#M2" title="FINSEQ_2:mode.2">Element</a> of  the   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a>  <a href="finseq_2.html#K3" title="FINSEQ_2:func.3">*</a> </span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span> is  <a href="finseq_1.html#V3" title="FINSEQ_1:attr.3">FinSequence-membered</a>  &amp;  not <span class="p1"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"> the    <a href="finseq_2.html#M2" title="FINSEQ_2:mode.2">Element</a> of  the   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a>  <a href="finseq_2.html#K3" title="FINSEQ_2:func.3">*</a> </span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span> is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>  )</span><br/>

<span class="kw">thus </span><a NAME="E1:208_1_1"/>
( <span class="p1"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"> the    <a href="finseq_2.html#M2" title="FINSEQ_2:mode.2">Element</a> of  the   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a>  <a href="finseq_2.html#K3" title="FINSEQ_2:func.3">*</a> </span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span> is  <a href="zfmisc_1.html#V1" title="ZFMISC_1:attr.1">trivial</a>  &amp; <span class="p1"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"> the    <a href="finseq_2.html#M2" title="FINSEQ_2:mode.2">Element</a> of  the   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a>  <a href="finseq_2.html#K3" title="FINSEQ_2:func.3">*</a> </span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span> is  <a href="finseq_1.html#V3" title="FINSEQ_1:attr.3">FinSequence-membered</a>  &amp;  not <span class="p1"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"> the    <a href="finseq_2.html#M2" title="FINSEQ_2:mode.2">Element</a> of  the   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a>  <a href="finseq_2.html#K3" title="FINSEQ_2:func.3">*</a> </span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span> is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>  )
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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