"[T]extual comparisons of reconstructed non-texts [the Trinity Chronicle] with hypothetical non-texts [the Compilation of 1448] in order to determine textual primacy cannot be definitive.
The Novgorodsko-Sofiysky Svod (Russian: Новгородско-Софийский свод, Novgorod-Sofia Compilation) is a tentative name for a hypothetical common source for the Novgorod Fourth Chronicle and the Sofia First Chronicle, according to Russian philologist Aleksey Shakhmatov.
[2] Shakhmatov initially dated it by the year 1448 (hence it also used to be called 1448 compilation; Russian: "свод 1448 г.
[2] Some Russian philologists shared his opinion, while others attribute the common source to the 1418 compilation of the 15th century Photius, Metropolitan of Moscow.
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