@article{oai:ynu.repo.nii.ac.jp:00006918, author = {Kobayashi, Masako}, issue = {2}, journal = {Yokohama Mathematical Journal = 横濱市立大學紀要. D部門, 数学}, month = {}, note = {application/pdf, In this paper, we consider an orientable closed 3-manifold $M$ which admits a dihedral group $D_{2,p}(p>1)$ action such that $D_{2,p}$ contains orientation reversing involutions, and the fixed point set consists of a finite number of points. For such a pair $(M, D_{2,p})$ , we study the problem that which integer can occur as the first Betti number $q=¥beta_{1}(M)$ of $M$ . For a pair $(M, D_{2,p})$ as above we have (1) $q$ is odd, or (2) $p$ is odd and $q$ is even integer greater than or equal to $p-1$ . Furthermore, for any pair of integers $(p, q)$ with condition (1) or (2), there is a pair $(M, D_{2,p})$ as above with $¥beta_{1}(M)=q$ .}, pages = {73--86}, title = {ORIENTATION REVERSING DIHEDRAL GROUP ACTIONS ON 3-MANIFOLDS}, volume = {45}, year = {1998} }