[EN] The population of Zumárraga, in the province of Guipúzcoa, is fortunate to preserve its original late Gothic wooden parish church. The geometric analysis has shown the high speculative level of its architectural design ...

We derive new iterative methods with order of convergence four or higher, for solving nonlinear systems, by composing iteratively golden ratio methods with a modified Newton's method. We use different efficiency indices ...

[EN] Octagonal layouts are widely used in medieval architecture. In Spain, the Cathedral of Valencia is an exceptional example because of its compositional arrangement and early date of construction. The study of this ...