Encyclopedia > 23rd century

Article Content

23rd century

(22nd century - 23rd Century - 24th century - other centuries)

The twenty-third century comprises the years 2201-2300.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Quadratic formula

... solutions x, both of which are complex numbers. The two solutions are complex conjugates of each other. (In this case, the parabola does not intersect the x-axis at ...