Robuta

https://math.biu.ac.il/node/2896 On Wilson's existence theorem and the monoid of continuous maps on block designs | המחלקה למתמטיקה existence theorem continuous maps block designs wilson monoid https://eudml.org/doc/116536 EuDML | A note on existence theorem of Peano a note existence theorem peano https://research.universityofgalway.ie/en/publications/a-general-existence-theorem-for-the-singular-equation-phipy-plus--6/ A general existence theorem for the singular equation (phi(p)(y )) plus f(t, y)=0 - University of... existence theorem singular equation p y general phi