Nu stiu ce inseamna functie concava si convexa. Mai exact aplicata pe Nocturne necklace set Concave Layers Vs Convex Layers at Ian Stewart blog Convex Function Briefly Describe The Difference Between A Convex. Each set of Treasure necklaces is a story. In each set you will find three necklaces, which together create a full story but you can also wear each of them separately. Together a symbol of harmony, energy and emotion. Separately a detail that attracts glances. Mix, combine, tell your story. "Nocturne" is gold plated jewelry created for the time when everything else falls silent the night. It was created from the energy of rituals, the power of intuition and light beaming from within. Each pendant is like a talisman not for decoration, but for strength. For women who do not need to be afraid of the darkness, because they create it themselves. Please note that jewelry products contain small elements that can pose a choking hazard if swallowed. Jewelry is not a toy and should only be used by children under adult supervision. For safety, we recommend that you regularly check your jewelry for damage or loose parts.