1 files changed, 37 insertions, 0 deletions
diff --git a/src/Persistence_representations/concept/Topological_data_with_distances.h b/src/Persistence_representations/concept/Topological_data_with_distances.h
new file mode 100644
index 00000000..8efebf7c
--- /dev/null
+++ b/src/Persistence_representations/concept/Topological_data_with_distances.h
@@ -0,0 +1,37 @@
+/*    This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
+ *    See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
+ *    Author(s):       Pawel Dlotko
+ *
+ *    Copyright (C) 2016 Inria
+ *
+ *    Modification(s):
+ *      - YYYY/MM Author: Description of the modification
+ */
+
+#ifndef CONCEPT_TOPOLOGICAL_DATA_WITH_DISTANCES_H_
+#define CONCEPT_TOPOLOGICAL_DATA_WITH_DISTANCES_H_
+
+namespace Gudhi {
+
+namespace Persistence_representations {
+
+/** \brief The concept Topological_data_with_distances describes the requirements
+  * for a type to implement a container that allows computations of distance to another contained of that type.
+  * \details
+  * The second parameter of the distance function allow to declare power of a distance. The exact meaning of that
+  * number will be different for different distances. A few examples are given below:
+  * In case of p-Wasserstein distance, the power is equal to p. power = std::limit<double>::max() for bottleneck
+  * distance.
+  *
+  * In case of L^p landscape distance, the power is equal to p. s
+  */
+class Topological_data_with_distances {
+ public:
+  double distance(const Topological_data_with_distances& second, double power = 1);
+};
+
+}  // namespace Persistence_representations
+
+}  // namespace Gudhi
+
+#endif  // CONCEPT_TOPOLOGICAL_DATA_WITH_DISTANCES_H_