In Hindu astrology, Ketu represents karmic collections both good and bad, spirituality, and supernatural influences.

Ketu signifies the spiritual process of the refinement of materialization to spirit and is considered both malefic and benefic, as it causes sorrow and loss, and yet at the same time turns the individual to God.

Ketu is a karaka or indicator of intelligence, wisdom, non-attachment, fantasy, penetrating insight, derangement, and psychic abilities.

Ketu is believed to bring prosperity to the devotee's family, removes the effects of snakebite and illness arising out of poisons.

There are three different general early historic scripts - Brāhmī and its variants, Kharoṣṭhī, and Tocharian, the so-called slanting Brahmi.

Ka as found in standard Brahmi, was based on a simple "+" shape, with slight variations toward the Gupta .

The third form of Ka, in Kharoṣṭhī (𐨐) was probably derived from Aramaic separately from the Brahmi letter.

The Brahmi letter , ka, is probably derived from the Aramaic Kaph, and is thus related to the modern Latin K and Greek Kappa.

Several identifiable styles of writing the Brahmi Ka can be found, most associated with a specific set of inscriptions from an artifact or diverse records from an historic period.

The Kharoshthi letter is generally accepted as being derived from the Aramaic Kaph, and is thus related to K and Kappa, in addition to the Brahmi ka.

Most Devanagari letters drop a character's vertical stem to create a half form, but due to its large tail to the right of the stem, the common half form of क has its tail reduced to attach to the following letter.

Some conjunct clusters are always represented by a true ligature, instead of a shape that can be broken into constituent independent letters.

Vertically stacked ligatures are the most common conjunct forms found in Devanagari text.

The Bengali-Assamese script ক is derived from the Siddhaṃ , and is marked by a similar horizontal head line, but less geometric shape, than its Devanagari counterpart, क.

This conjunct not only has a special form in all Bengali alphabets, it even functions as an independent letter in the Assamese orthography.

ક (Ka) is similar in appearance to ફ (Pha), and care should be taken to avoid confusing the two when reading Gujarati script texts.

As is common in Indic scripts, Malayalam joins letters together to form conjunct consonant clusters.

As is common in Indic scripts, Odia joins letters together to form conjunct consonant clusters.

The second type of conjunct formation is through pure ligatures, where the constituent consonants are written together in a single graphic form.

Although ostensibly a conjunct of Ka and Ssa, Odia କ୍ଷ (Kṣa) is largely treated as an independent letter pronounced /kʰjɔ/.

As is common in Indic scripts, Kaithi joins letters together to form conjunct consonant clusters.

As is common in Indic scripts, Tirhuta joins letters together to form conjunct consonant clusters.