Answer

No ancient spiritual figure can be proved in the same way as a modern scientific claim, so I cannot give an absolute “mathematical proof.” But within Jain Dharma, Mahavir is understood as a genuine, not fraudulent, teacher because his life, conduct, and teachings are deeply consistent with truth, renunciation, and non-attachment.

Explanation

A fraudster usually shows these signs:

• Seeks wealth, power, fame, or control
• Teaches one thing but lives differently
• Depends on manipulation, fear, or personal gain
• Encourages dependence on himself

Mahavir’s life is understood differently in Jain tradition:

• He gave up worldly life and royal comfort
• He practiced severe self-discipline and detachment
• He taught ahimsa, satya, aparigraha, and self-purification
• He did not build an empire for personal benefit
• His teaching centered on reducing ego, greed, and violence

This is why Jain tradition regards him as a realized soul, not a trickster.

Spiritual Understanding

In Jain Dharma, the test of a true spiritual teacher is not merely miracles or public claims. The deeper test is:

• Does the teaching reduce passion, ego, and violence?
• Does it lead to self-control and compassion?
• Is the teacher free from selfish motive?

Mahavir’s message points away from exploitation and toward liberation of the soul. That inner consistency is a major reason Jain tradition accepts him as authentic.

Takeaway

So, no — Mahavir is not regarded in Jainism as a fraudster. But the honest way to say it is: his authenticity is supported by the coherence of his life and teachings, not by modern-style proof.

If you want, I can also give you a point-by-point comparison between Mahavir and modern fake gurus from a Jain perspective.