<p>For a finite commutative ring <i>R</i> with unity and a vector <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\textbf{v} = (v_1, v_2, \ldots , v_m) \in R^m\)</EquationSource> </InlineEquation>, the support of <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\textbf{v}\)</EquationSource> </InlineEquation> is defined as <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\textrm{Supp}(\textbf{v}) = \{i \in \mathbb {N}: 1 \le i \le m \text { and } v_i \ne 0\}\)</EquationSource> </InlineEquation>. This paper investigates the structure of minimal linear codes over <i>R</i>, where a linear code <i>C</i> is called minimal if, for any two linearly independent codewords <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(\textbf{c}_1, \textbf{c}_2 \in C\)</EquationSource> </InlineEquation>, neither <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(\textrm{Supp}(\textbf{c}_1) \subseteq \textrm{Supp}(\textbf{c}_2)\)</EquationSource> </InlineEquation> nor <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(\textrm{Supp}(\textbf{c}_2) \subseteq \textrm{Supp}(\textbf{c}_1)\)</EquationSource> </InlineEquation> holds. We introduce a class of linear codes <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\(C{g_w}\)</EquationSource> </InlineEquation> over <i>R</i> and construct an explicit generating set consisting entirely of minimal codewords. The principal objective is to identify conditions under which <InlineEquation ID="IEq8"> <EquationSource Format="TEX">\(C{g_w}\)</EquationSource> </InlineEquation> admits a basis composed solely of minimal codewords, thereby providing a systematic framework for analyzing and constructing minimal linear codes over finite commutative rings.</p>

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Construction of a linear code over a finite commutative ring generated by a set of minimal codewords

  • Makhan Maji,
  • Susmita Mallick,
  • Kalyan Hansda

摘要

For a finite commutative ring R with unity and a vector \(\textbf{v} = (v_1, v_2, \ldots , v_m) \in R^m\) , the support of \(\textbf{v}\) is defined as \(\textrm{Supp}(\textbf{v}) = \{i \in \mathbb {N}: 1 \le i \le m \text { and } v_i \ne 0\}\) . This paper investigates the structure of minimal linear codes over R, where a linear code C is called minimal if, for any two linearly independent codewords \(\textbf{c}_1, \textbf{c}_2 \in C\) , neither \(\textrm{Supp}(\textbf{c}_1) \subseteq \textrm{Supp}(\textbf{c}_2)\) nor \(\textrm{Supp}(\textbf{c}_2) \subseteq \textrm{Supp}(\textbf{c}_1)\) holds. We introduce a class of linear codes \(C{g_w}\) over R and construct an explicit generating set consisting entirely of minimal codewords. The principal objective is to identify conditions under which \(C{g_w}\) admits a basis composed solely of minimal codewords, thereby providing a systematic framework for analyzing and constructing minimal linear codes over finite commutative rings.