Globally generated vector bundles with small c1 on projective spaces

Author(s)

    • Anghel, Cristian
    • Coanda, Iustin
    • Manolache, Nicolae

Bibliographic Information

Globally generated vector bundles with small c1 on projective spaces

Cristian Anghel, Iustin Coanda, Nicolae Manolache

(Memoirs of the American Mathematical Society, no. 1209)

American Mathematical Society, c2018

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Includes bibliographical references

May 2018, volume 253, number 1209 (fourth of 7 numbers)

Description and Table of Contents

Description

The authors provide a complete classification of globally generated vector bundles with first Chern class $c_1 \leq 5$ one the projective plane and with $c_1 \leq 4$ on the projective $n$-space for $n \geq 3$. This reproves and extends, in a systematic manner, previous results obtained for $c_1 \leq 2$ by Sierra and Ugaglia [J. Pure Appl. Algebra 213 (2009), 2141-2146], and for $c_1 = 3$ by Anghel and Manolache [Math. Nachr. 286 (2013), 1407-1423] and, independently, by Sierra and Ugaglia [J. Pure Appl. Algebra 218 (2014), 174-180]. It turns out that the case $c_1 = 4$ is much more involved than the previous cases, especially on the projective 3-space. Among the bundles appearing in our classification one can find the Sasakura rank 3 vector bundle on the projective 4-space (conveniently twisted). The authors also propose a conjecture concerning the classification of globally generated vector bundles with $c_1 \leq n - 1$ on the projective $n$-space. They verify the conjecture for $n \leq 5$.

Table of Contents

Introduction Acknowledgements Preliminaries Some general results The cases $c_1=4$ and $c_1 = 5$ on ${\mathbb P}^2$ The case $c_1 = 4$, $c_2 = 5, 6$ on ${\mathbb P}^3$ The case $c_1 = 4$, $c_2 = 7$ on ${\mathbb P}^3$ The case $c_1 = 4$, $c_2 = 8$ on ${\mathbb P}^3$ The case $c_1 = 4$, $5 \leq c_2 \leq 8$ on ${\mathbb P}^n$, $n \geq 4$ Appendix A. The case $c_1 = 4$, $c_2 = 8$, $c_3 = 2$ on ${\mathbb P}^3$ Appendix B. The case $c_1 = 4$, $c_2 = 8$, $c_3 = 4$ on ${\mathbb P}^3$ Bibliography.

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