TY - JOUR
AU - KamiĆska, A.
AU - Krasikova, I.
AU - Popov, M.
PY - 2020/12/06
Y2 - 2024/07/13
TI - Projection lateral bands and lateral retracts
JF - Carpathian Mathematical Publications
JA - Carpathian Math. Publ.
VL - 12
IS - 2
SE - Scientific articles
DO - 10.15330/cmp.12.2.333-339
UR - https://journals.pnu.edu.ua/index.php/cmp/article/view/4145
SP - 333-339
AB - <p>A projection lateral band $G$ in a Riesz space $E$ is defined to be a lateral band which is the image of an orthogonally additive projection $Q: E \to E$ possessing the property that $Q(x)$ is a fragment of $x$ for all $x \in E$, called a lateral retraction of $E$ onto $G$ (which is then proved to be unique). We investigate properties of lateral retracts, that are, images of lateral retractions, and describe lateral retractions onto principal projection lateral bands (i.e. lateral bands generated by single elements) in a Riesz space with the principal projection property. Moreover, we prove that every lateral retract is a lateral band, and every lateral band in a Dedekind complete Riesz space is a projection lateral band.</p>
ER -