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## Strong Roman Domination Number of Complementary Prism Graphs

#### Doost Ali Mojdeh [1] , Ali Parsian [2] , Iman Masoumi [3]

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Let $G=(V,E)$ be a simple graph  with vertex set $V=V(G)$, edge set $E=E(G)$ and from maximum degree $\Delta=\Delta(G)$. Also let
$f:V\rightarrow\{0,1,...,\lceil\frac{\Delta}{2}\rceil+1\}$ be a function that labels the vertices of $G$. Let $V_i=\{v\in V: f(v)=i\}$ for $i=0,1$ and let $V_2=V-(V_0\bigcup V_1)=\{w\in V: f(w)\geq2\}$. A function $f$ is called a strong Roman dominating function (StRDF) for $G$, if every $v\in V_0$ has a neighbor $w$, such that $w\in V_2$ and $f(w)\geq 1+\lceil\frac{1}{2}|N(w)\bigcap V_0|\rceil$. The minimum weight, $\omega(f)=f(V)=\Sigma_{v\in V} f(v)$, over all the strong Roman dominating functions of $G$, is called the strong Roman domination number of $G$ and we denote it by $\gamma_{StR}(G)$. An StRDF of minimum weight is called a $\gamma_{StR}(G)$-function. Let $\overline{G}$ be the complement of $G$. The complementary prism $G\overline{G}$ of $G$ is the graph formed from the disjoint union $G$ and $\overline{G}$ by adding the edges of a perfect matching between the corresponding vertices of $G$ and $\overline{G}$. In this paper, we investigate some properties of Roman, double Roman and strong Roman domination number of  $G\overline{G}$.
Strong Roman domination, double Roman domination, Roman domination, prism, complementary prism
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Primary Language en Engineering Articles Author: Doost Ali MojdehInstitution: University of MazandaranCountry: Iran Orcid: 0000-0001-6323-5956Author: Ali ParsianInstitution: University of TafreshCountry: Iran Author: Iman Masoumi (Primary Author)Institution: University of TafreshCountry: Iran Publication Date: June 30, 2019
 Bibtex @research article { tjmcs474945, journal = {Turkish Journal of Mathematics and Computer Science}, issn = {}, eissn = {2148-1830}, address = {Matematikçiler Derneği}, year = {2019}, volume = {11}, pages = {40 - 47}, doi = {}, title = {Strong Roman Domination Number of Complementary Prism Graphs}, key = {cite}, author = {Mojdeh, Doost Ali and Parsian, Ali and Masoumi, Iman} } APA Mojdeh, D , Parsian, A , Masoumi, I . (2019). Strong Roman Domination Number of Complementary Prism Graphs. Turkish Journal of Mathematics and Computer Science, 11 (1), 40-47. Retrieved from http://dergipark.org.tr/tjmcs/issue/46614/474945 MLA Mojdeh, D , Parsian, A , Masoumi, I . "Strong Roman Domination Number of Complementary Prism Graphs". Turkish Journal of Mathematics and Computer Science 11 (2019): 40-47 Chicago Mojdeh, D , Parsian, A , Masoumi, I . "Strong Roman Domination Number of Complementary Prism Graphs". Turkish Journal of Mathematics and Computer Science 11 (2019): 40-47 RIS TY - JOUR T1 - Strong Roman Domination Number of Complementary Prism Graphs AU - Doost Ali Mojdeh , Ali Parsian , Iman Masoumi Y1 - 2019 PY - 2019 N1 - DO - T2 - Turkish Journal of Mathematics and Computer Science JF - Journal JO - JOR SP - 40 EP - 47 VL - 11 IS - 1 SN - -2148-1830 M3 - UR - Y2 - 2019 ER - EndNote %0 Turkish Journal of Mathematics and Computer Science Strong Roman Domination Number of Complementary Prism Graphs %A Doost Ali Mojdeh , Ali Parsian , Iman Masoumi %T Strong Roman Domination Number of Complementary Prism Graphs %D 2019 %J Turkish Journal of Mathematics and Computer Science %P -2148-1830 %V 11 %N 1 %R %U ISNAD Mojdeh, Doost Ali , Parsian, Ali , Masoumi, Iman . "Strong Roman Domination Number of Complementary Prism Graphs". Turkish Journal of Mathematics and Computer Science 11 / 1 (June 2019): 40-47. AMA Mojdeh D , Parsian A , Masoumi I . Strong Roman Domination Number of Complementary Prism Graphs. TJMCS. 2019; 11(1): 40-47. Vancouver Mojdeh D , Parsian A , Masoumi I . Strong Roman Domination Number of Complementary Prism Graphs. Turkish Journal of Mathematics and Computer Science. 2019; 11(1): 47-40.