TY - JOUR ID - Estrada2016 LB - Estrada2016 AU - Estrada, Ricardo TI - A two cones support theorem ST - A two cones support theorem JO - Opuscula Math. JA - Opuscula Math. JF - Opuscula Mathematica PY - 2016 VL - 36 IS - 2 SP - 207 EP - 213 DO - http://dx.doi.org/10.7494/OpMath.2016.36.2.207 UR - http://dx.doi.org/10.7494/OpMath.2016.36.2.207 AB - We show that if the Radon transform of a distribution \(f\) vanishes outside of an acute cone \(C_{0}\), the support of the distribution is contained in the union of \(C_{0}\) and another acute cone \(C_{1}\), the cones are in a suitable position, and \(f\) vanishes distributionally in the direction of the axis of \(C_{1}\), then actually \(\operatorname*{supp}f\subset C_{0}\). We show by examples that this result is sharp. KW - Radon transforms KW - support theorems KW - distributions SN - 1232-9274 ER -