J. Landsberg

activity

19972005

E_{7 \frac{1}{2}}

4 citations · 5 across the 5 of their papers we have counts for

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Showing 2004Show all

2 papers · 1 filter

math.AG2004

Legendrian varieties

J. M. Landsberg, L. Manivel

We investigate the geometry of Legendrian complex projective manifolds $X\subset\PP V$. By definition, this means $V$ is a complex vector space of dimension $2 n + 2$ , endowed with a…

math.RT2004★ 4 cited

The sextonions and $E_{7 \frac{1}{2}}$

J. M. Landsberg, L. Manivel

We fill in the "hole" in the exceptional series of Lie algebras that was observed by Cvitanovic, Deligne, Cohen and deMan. More precisely, we show that the intermediate Lie algebra…

Legendrian varieties

The sextonions and E721​​

The sextonions and $E_{7 \frac{1}{2}}$