E7 chords with alternative bass notes

E7 chords for piano with alternative bass notes presented by keyboard diagrams.
Explanation: The slash in the chord name indicates that the second letter is added as a new bass note. E7/C# should therefore be read as E seventh chord with a C sharp note in the bass and E7/A as E seventh chord with a A note in the bass.
Theory: E7/C# could be seen as an inversion of E13 with the ninth and the eleventh omitted. E7/A could be seen as an inversion of E11 with the ninth omitted.

E7/C#

E7/C# chord diagram
Notes: C# - E - G# - B - D

E7/A

E7/A chord diagram
Notes: A - E - G# - B - D

E chord categories

E Em E7 Em7 Emaj7 EmM7 E6 Em6 E6/9 E5 E9 Em9 Emaj9 E11 Em11 E13 Em13 Eadd E7-5 E7+5 Esus Edim Edim7 Em7b5 Eaug Eaug7