Search Results - "Choi, Younggi"

Eilenberg–Moore spectral sequences converging to the homology of the four fold loop spaces of compact simple Lie groups by Choi, Younggi

“…We prove that the Eilenberg–Moore spectral sequences of the path loop fibration converging to the mod p (co)homology of the four fold loop spaces of any…”
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A Historical and Mathematical Study on Continuum - Focusing on the Composition and Infinite Division by Seungju Baek, Younggi Choi

“…This study conducted historical and mathematical analyses of the composition of continuum and infinite division. Regarding the results of the historical…”
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Total Synthesis of (−)- and ent-(+)-Vindoline and Related Alkaloids by Ishikawa, Hayato, Elliott, Gregory I, Velcicky, Juraj, Choi, Younggi, Boger, Dale L

“…A concise 11-step total synthesis of (−)- and ent-(+)-vindoline (3) is detailed based on a unique tandem intramolecular [4 + 2]/[3 + 2] cycloaddition cascade…”
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The 'sandwich generation' in Korean academe: between traditional academic authority and meritocratic culture by Shin, Jung Cheol, Kim, Yangson, Lim, Heejin, Shim, Bongsup, Choi, Younggi

“…This study investigates how academics hired during the period of rapid neoliberal reforms differ from the senior academics hired before the reforms and the…”
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Total synthesis of (-)- and ent-(+)-vindoline by Choi, Younggi, Ishikawa, Hayato, Velcicky, Juraj, Elliott, Gregory I, Miller, Michael M, Boger, Dale L

“…[reaction: see text] Two exceptionally concise total syntheses of (-)- and ent-(+)-vindoline are detailed enlisting a diastereoselective tandem [4 + 2]/[3 + 2]…”
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Catalyzed Asymmetric DielsAlder Reactions of Benzoquinone. Total Synthesis of (−)-Ibogamine by White, James D., Choi, Younggi

“…The DielsAlder reaction of 1,4‐benzoquinone with 1,3‐dienes catalyzed by Mikami's [Ti{(S)‐binol(2−)}Cl2] complex (binol=[1,1′‐binaphthalene]‐2,2′‐diol) gives…”
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Post‐collisional sedimentation of the Early Mesozoic Munamdong Formation in South Korea by Choi, Younggi, Gihm, Yong Sik

“…Post‐collisional processes cause uplift and exhumation of the overthickened crust together with the formation of sedimentary basins. To determine the influence…”
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Intramolecular Photocycloaddition of Unsaturated Isoquinuclidines. Synthesis of 2-Azatetracyclo[4.0.0.4,907,10]decanes and 3-Azatetracyclo[6.1.1.0.2,705,9]decanes by Choi, Younggi, White, James D

“…2-Azabicyclo[2.2.2]oct-5-enes bearing an endo alkenyl substituent were synthesized by Diels−Alder addition of methyl vinyl ketone to a 1,6-dihydropyridine…”
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β‑Functionalization of Saturated Aza-Heterocycles Enabled by Organic Photoredox Catalysis by Holmberg-Douglas, Natalie, Choi, Younggi, Aquila, Brian, Huynh, Hoan, Nicewicz, David A

“…The direct β-functionalization of saturated aza-heterocycles has remained a synthetic challenge because of the remote and unactivated nature of β-C–H bonds in…”
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Evolution of the Mesozoic Yuljeon Basin in South Korea and its tectonic implication by Choi, Younggi, Ryu, In Chang, Seo, Jieun, Oh, Chang Whan

“…The Mesozoic Yuljeon Basin (YB) is a small scale non–marine sedimentary basin in the northeastern part of the Gyeonggi Massif in the Korean Peninsula. The YB…”
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Sleep modulating agents by Choi, Younggi, Raymer, Brian K.

“…[Display omitted] Sleep and wake are two fundamental states of human existence. Conditions such as insomnia and hypersomnia can have profound negative effects…”
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Positional Analogue Scanning: An Effective Strategy for Multiparameter Optimization in Drug Design by Pennington, Lewis D, Aquila, Brian M, Choi, Younggi, Valiulin, Roman A, Muegge, Ingo

“…Minimizing the number and duration of design cycles needed to optimize hit or lead compounds into high-quality chemical probes or drug candidates is an ongoing…”
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The topological aspect of the holonomy displacement on the principal U(n) bundles over Grassmannian manifolds by Byun, Taechang, Choi, Younggi

“…Consider the principal U(n) bundles over Grassmann manifolds U(n)→U(n+m)/U(m)→πGn,m. Given X∈Um,n(C) and a 2-dimensional subspace m′⊂m⊂u(m+n), assume either m′…”
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Cohomology of loop spaces of Hermitian symmetric spaces of classical types by Choi, Younggi

“…We study the mod p cohomology of loop spaces and free loop spaces of irreducible compact Hermitian symmetric spaces of classical types. We also prove that the…”
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Homology of iterated loop spaces of homogeneous spaces associated with exceptional Lie groups by Choi, Younggi

“…We study the mod 2 homology of the double and triple loop spaces of homogeneous spaces associated with exceptional Lie groups. The main computational tools are…”
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Nickel-Catalyzed Cross-Electrophile Reductive Couplings of Neopentyl Bromides with Aryl Bromides by Biswas, Soumik, Qu, Bo, Desrosiers, Jean-Nicolas, Choi, Younggi, Haddad, Nizar, Yee, Nathan K, Song, Jinghua J, Senanayake, Chris H

“…5-Cyanoimidazole was identified as an inexpensive ligand for nickel-catalyzed cross-electrophile couplings by screening a diverse set of pharmaceutical…”
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The scandals of geometry and school mathematics: the parallel postulate and the equality 0.99... = 1 by CHOI, YOUNGGI, LEE, JIHYUN

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On the category weight of Spin ( n ) by Choi, Younggi

“…We give a lower bound for the Lusternik–Schnirelmann category of Spin ( n ) by computing the category weight and the module category weight of Spin ( n ) …”
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Homology of gauge groups associated with special unitary groups by Choi, Younggi

“…We study the homology of gauge groups associated with principal SU ( n ) bundles over the four-sphere. After computing the mod p homology of based gauge groups…”
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Infra-nilmanifolds modeled on the group of uni-triangular matrices by Choi, Younggi, Lee, Jong Bum, Lee, Kyung Bai

“…Let N m be the group of m × m upper triangular real matrices with all the diagonal entries 1. Then it is an ( m - 1 ) -step nilpotent Lie group, diffeomorphic…”
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