## On the Landau-Kallman-Rota inequality.(English)Zbl 0238.47007

### MSC:

 47A30 Norms (inequalities, more than one norm, etc.) of linear operators 26D10 Inequalities involving derivatives and differential and integral operators 47D03 Groups and semigroups of linear operators 46E30 Spaces of measurable functions ($$L^p$$-spaces, Orlicz spaces, Köthe function spaces, Lorentz spaces, rearrangement invariant spaces, ideal spaces, etc.)
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### References:

 [1] Hille, E, Functional analysis and semi-groups, () · Zbl 0229.39001 [2] Hille, E; Phillips, R.S, Functional analysis and semi-groups, () [3] Hille, E, Remark on the Landau-kallman-Rota inequality, Aequationes mat., 4, 239-240, (1970) [4] Kallman, R.R; Rota, G.-C, On the inequality ‖f′‖^{2} ⩽ 4 ‖f‖ ‖f″‖, () [5] Kurepa, S, Remark on the Landau inequality, Aequationes math., 4, 240-241, (1970) [6] Kraljević, H; Kurepa, S, Semi-groups on Banach spaces, Glasnik mat., 5, 109-117, (1970) · Zbl 0202.42501
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