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The reason he could do this is that, in his system, when two sentences are materially equivalent, they name the same truth value.] We shall soon see why this principle is inconsistent.
By "materially equivalent" he seems to mean "mean the same as".
The most recent valuation is the value resulting from the most recent appraisal report at the time of the transfer and is materially equivalent to the fair value used in international accounting.
The truth of what is said by this sentence, after all, is compatible with the sentence used on the right-hand side being materially equivalent to, but different in meaning from, the sentence mentioned on the left.
Sentences consisting of an "According to PW …" operator followed by a sub-sentence are thus not extensional, since substituting another sub-sentence (materially) equivalent in truth-value does not always preserve truth.
Note the last row of the table — when Frege wants to assert that two conditions are materially equivalent, he uses the identity sign, since this says that they denote the same truth-value.
Similar(48)
Random fibre distributions, materially and statistically equivalent to real distributions, are analysed.
The SEC called the proxy materials materially false and misleading.
Starting at age 50 the detection rate and the false-positive rate are both about 2 percentage points less and the costs are less, but not reduced sufficiently to make such screening materially cheaper than an equivalent age screening policy.
The resulting multivariate models (equivalent to Tables 1 and 2) are materially unchanged, with the expected slight reduction in statistical power (data not shown).
The lesser effect of β blockers in preventing stroke (fig 4; relative risk 1.18, 1.03 to 1.36; P=0.02) was not materially altered by adjusting for the small average difference in blood pressure reduction between the randomised groups and is equivalent to a 19% reduction in risk of stroke rather than 27% (since 1.11×0.73 (average relative risk from fig 3) is 0.81 and 1.00−0.81 is 0.19).
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com