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<b>consider </b><font color="Maroon">c<sub>1</sub></font> being  <a href="vectsp_1.html#V3">strict</a> <a href="vectsp_1.html#NM2">Field</a>;<br/>
<b>reconsider </b><font color="Maroon">c<sub>2</sub></font> = <font color="Maroon">c<sub>1</sub></font> as   <a href="funcsdom.html#NM1">Ring</a> ;<br/>
<a NAME="E3:7_1_1"/>
<font color="Maroon">c<sub>2</sub></font> is <a href="group_1.html#V4">associative</a>
 
;<br/>
<b>hence </b><a NAME="E4:7_1_1"/>
ex <font color="Olive">b<sub>1</sub></font> being  <a href="funcsdom.html#NM1">Ring</a> st <font color="Olive">b<sub>1</sub></font> is <a href="vectsp_1.html#V3">strict</a>
 ;<br/>


</div>
