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兩類特殊圖的控制數(shù)

2021-01-16 02:53岳孟田李文升李增提李瑞娟

岳孟田 李文升 李增提 李瑞娟

【摘要】設(shè)G=(V,E)是一個(gè)無向圖,圖G的控制數(shù)λ(G)為圖G的所有控制函數(shù)的最小權(quán)重。研究蜘蛛圖S2,n、S3,n及聯(lián)圈圖2·Cm的控制問題,得到了S2,n、S3,n的控制數(shù)的確切值,分別為n和n+1,同時(shí)證明了聯(lián)圈圖2·Cm的控制數(shù)滿足當(dāng)m0(mod 3)時(shí),γ(2·Cm)=(2m-3)/3;當(dāng)m1(mod 3)時(shí),γ(2·Cm)=(2m+1)/3;當(dāng)m2(mod3)時(shí),γ(2·Cm)=(2m-1)/3。

【關(guān)鍵詞】控制函數(shù);控制數(shù);蜘蛛圖;聯(lián)圈圖

〔中圖分類號(hào)〕O157.5 〔文獻(xiàn)標(biāo)識(shí)碼〕A 〔文章編號(hào)〕1674-3229(2021)04-0012-03

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[收稿日期]2021-10-20

[基金項(xiàng)目]河北省教育廳重點(diǎn)項(xiàng)目(ZD2018074)

[作者簡(jiǎn)介]岳孟田(1973-),男,碩士,廊坊師范學(xué)院理學(xué)院教授,研究方向:應(yīng)用數(shù)學(xué)。