In mathematical finance delta, δ, is one of "The Greeks"; delta measures the sensitivity of the value of a derivative to changes in the price of its underlying instrument.
In particle physics, the delta particle is a short lived resonance of the proton.
In information technology, delta compression is a process that produces a file recording only the changes (or diff) between versions.
Sky blue represents the Deltaic sky where the hope covers and protects the aspirations of the inhabitants of the region, inspiring the force to raise their spirit and to overcome the difficulties that can limit the harmonic and deserved development of the state.
The stars symbolizes the four municipalities which conform the state and are white for remember the peace, the harmony, the spiritual tranquility and the bonanza necessaries for the well-being of the Deltaic community.
The motto remembers the calmness, the tranquility, the concord and the bonanza in the state and the enamel of the pennant (vert) alludes to the verdure of its forests, fertility of its ground, the hope, the abundance and the freedom.