Similar logos of Nepalese Universities

Here are five logos of five universities, Tribhuvan TU), Kathmandu (KU), Purbanchal (PU), Pokhara (PoU) and Siddhartha University (SU), in Nepal. I did not find the logo of Mahendra Sanskrit (MSU) and Lumbini Buddha Universities (LBU). Though LBU has been accredited in 2004, SU has not been accredited yet.

While looking the above logos, there are similarities mainly with two intersecting equilateral triangles (षड्कोण), symbol of academics, wisdom, education... Most of the education related organization in Nepal use this symbol . Similarly, above four universities have used this symbol in different forms. Logo of SU is slightly different in this case. Red, Blue and white are the primary colours for all including yellow and pink for KU and SU. SU logo is the colourful one among the logos of Nepali Universities. Full names and date of establishment are printed in each logos. Abbreviated names are centered for TU, KU, and PU. Lotus leafs are seen only in TU and KU where as symbol of book in PoU and SU. SU also has map of Nepal and image of Buddha.

If you know the symbolic representation and meanings of the logos, please comment.