The reason often cited for this is that completely rigorous proofs, which tend to be longer and more unwieldy, may obscure what is being demonstrated.
32.
Rigorous proofs were first published in 1948 by Albert W . Tucker and his group . ( Dantzig's foreword to Nering and Tucker, 1993)
33.
Not for another 150 years would a rigorous proof to Newton's counting formula be found ( by James Joseph Sylvester, published in 1865 ).
34.
However, a rigorous proof for the existence of a superconducting ground state in either the Hubbard or the t-J Hamiltonian is not yet known.
35.
Actually, since anyone can easily look up the nature of any town, let's redact place of birth altogether, absent very rigorous proof.
36.
Where can I find a rigorous proof that the ratio of a circle's circumference to its diameter is a constant, independent of the diameter?
37.
To observe that rigorous proof comes only after unrigorous conjecture, experimentation and speculation is true, but it is trivial and no-one would deny this.
38.
At the present time, there is accumulating evidence for a fixed point suitable for asymptotic safety, while a rigorous proof of its existence is still lacking.
39.
A number of scientists in the field have argued that there is no rigorous proof that for optimal health you need to be above 50 nmol / l.
40.
It doesn't make much sence to me even for a non-rigorous proof . talk ) 01 : 16, 21 November 2016 ( UTC)