Geodesic
$p$-minimising tangent maps and harmonic $k$-forms
Bollettino della Unione matematica italiana, Série 8, 2B (1999) no. 2, pp. 331-339.

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Si studiano le applicazioni $p$-tangenti da $\mathbb{R}^{m}$ a $\mathbb{S}^{n}$ date come estensioni omogenee di $k$-forme armoniche. Vengono ricavate condizioni necessarie sul grado $k$ affinche tali applicazioni $p$-tangenti siano di energia minima. Una classificazione completa viene data nel caso in cui tali applicazioni tangenti di energia minima vadano da $\mathbb{R}^{8}$ su $\mathbb{S}^{4}$. 
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Montaldo, Stefano. $p$-minimising tangent maps and harmonic $k$-forms. Bollettino della Unione matematica italiana, Série 8, 2B (1999) no. 2, pp. 331-339. http://geodesic.mathdoc.fr/item/BUMI_1999_8_2B_2_a8/

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