Display:

$+\<\≤\<=++\∑.NOT.and\⁢\mathbf{+}$

Source:

<mo> + </mo>
<mo> &lt; </mo>
<mo> &le; </mo>
<mo> &lt;= </mo>
<mo> ++ </mo>
<mo> &sum; </mo>
<mo> .NOT. </mo>
<mo> and </mo>
<mo> &InvisibleTimes; </mo>
<mo mathvariant="bold"> + </mo>