359 citations
- University of LisbonPT47 papers
- Instituto Superior TécnicoPT12 papers
- Universidade Lusófona de Humanidades e TecnologiasPT12 papers
- Institute of Astrophysics and Space SciencesPT10 papers
- Universidade do PortoPT8 papers
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- Universidad de ExtremaduraES6 papers
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- Instituto Politécnico de LisboaPT4 papers
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Showing 2009Show all
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astro-ph.SR2009★ 6 cited
155-day Periodicity in Solar Cycles 3 and 4
J. M. Vaquero, R. M. Trigo, M. Vazquez +1
The near 155 days solar periodicity, so called Rieger periodicity, was first detected in solar flares data and later confirmed with other important solar indices. Unfortunately, a…
math.FA2009★ 1 cited
A multiplicative product of distributions and a class of ordinary differential equations with distributional coefficients
Nuno Costa Dias, Joao Nuno Prata
We construct a generalization of the multiplicative product of distributions presented by L. Hörmander in [L. Hörmander, {\it The analysis of linear partial differential operators…