<p>Let <i>C</i> and <i>W</i> be two integer sets. If <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(C+W={\mathbb {Z}}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>C</mi> <mo>+</mo> <mi>W</mi> <mo>=</mo> <mi mathvariant="double-struck">Z</mi> </mrow> </math></EquationSource> </InlineEquation>, then we say that <i>C</i> is an additive complement to <i>W</i>. If no proper subset of <i>C</i> is an additive complement to <i>W</i>, then we say that <i>C</i> is a minimal additive complement to <i>W</i>. Let <i>c</i> and <i>d</i> be two positive integers with <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(c\mid d\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>c</mi> <mo>∣</mo> <mi>d</mi> </mrow> </math></EquationSource> </InlineEquation>. In this paper, we prove that there exists an infinite, not eventually periodic set <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(W\subset {\mathbb {N}}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>W</mi> <mo>⊂</mo> <mi mathvariant="double-struck">N</mi> </mrow> </math></EquationSource> </InlineEquation> such that <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(w_{i+1}-w_{i}\in \{c,d\}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mi>w</mi> <mrow> <mi>i</mi> <mo>+</mo> <mn>1</mn> </mrow> </msub> <mo>-</mo> <msub> <mi>w</mi> <mi>i</mi> </msub> <mo>∈</mo> <mrow> <mo stretchy="false">{</mo> <mi>c</mi> <mo>,</mo> <mi>d</mi> <mo stretchy="false">}</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> for all <i>i</i> and there exists a minimal complement to <i>W</i>. Moreover, we partially solve a problem of Kiss, Sándor and Yang.</p>

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On minimal additive complements

  • Shi-Qiang Chen,
  • Min Tang

摘要

Let C and W be two integer sets. If \(C+W={\mathbb {Z}}\) C + W = Z , then we say that C is an additive complement to W. If no proper subset of C is an additive complement to W, then we say that C is a minimal additive complement to W. Let c and d be two positive integers with \(c\mid d\) c d . In this paper, we prove that there exists an infinite, not eventually periodic set \(W\subset {\mathbb {N}}\) W N such that \(w_{i+1}-w_{i}\in \{c,d\}\) w i + 1 - w i { c , d } for all i and there exists a minimal complement to W. Moreover, we partially solve a problem of Kiss, Sándor and Yang.