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CURVES AND VECTOR BUNDLES ON QUARTIC THREEFOLDS
Arrondo, Enrique,Madonna, Carlo G. Korean Mathematical Society 2009 대한수학회지 Vol.46 No.3
In this paper we study arithmetically Cohen-Macaulay (ACM for short) vector bundles $\varepsilon$ of rank k $\geq$ 3 on hypersurfaces $X_r\;{\subset}\;{\mathbb{P}}^4$ of degree r $\geq$ 1. We consider here mainly the case of degree r = 4, which is the first unknown case in literature. Under some natural conditions for the bundle $\varepsilon$ we derive a list of possible Chern classes ($c_1$, $c_2$, $c_3$) which may arise in the cases of rank k = 3 and k = 4, when r = 4 and we give several examples.
Curves and vector bundles on quartic threefolds
Enrique Arrondo,Carlo G. Madonna 대한수학회 2009 대한수학회지 Vol.46 No.3
In this paper we study arithmetically Cohen-Macaulay (ACM for short) vector bundles ε of rank ≥ 3 on hypersurfaces X_r ⊂P^4 of degree r≥1. We consider here mainly the case of degree r = 4, which is the first unknown case in literature. Under some natural conditions for the bundle ε we derive a list of possible Chern classes (c_1,c_2,c_3) which may arise in the cases of rank k=3 and k=4, when r=4 and we give several examples. In this paper we study arithmetically Cohen-Macaulay (ACM for short) vector bundles ε of rank ≥ 3 on hypersurfaces X_r ⊂P^4 of degree r≥1. We consider here mainly the case of degree r = 4, which is the first unknown case in literature. Under some natural conditions for the bundle ε we derive a list of possible Chern classes (c_1,c_2,c_3) which may arise in the cases of rank k=3 and k=4, when r=4 and we give several examples.
Unusual Association of Skipjack Tunas Katsuwonus pelamis and a Longline Vessel
Gonzalo Mucientes,Nair Vilas-Arrondo 한국해양과학기술원 2021 Ocean science journal Vol.56 No.1
Skipjack tuna were observed for the first time swimming in front of the bow of a fishing vessel during a tagging campaign in the North Atlantic. Video recordings show how tuna adapted their speed and direction to the vessel, using the pectoral fins to move from top to bottom and back and forth across the bow of the ship. We discuss the potential drivers of this behaviour.