Functional Interpretation and Modified Realizability Interpretation of ...
Functional Interpretation and Modified Realizability Interpretation of ...
Functional Interpretation and Modified Realizability Interpretation of ...
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¤ ¡¥ ¦¢¡££¤ ¡¥¢¡££¥ ¦¤¥ ¥¤ ¡ ¦¤¥¥¦¤¤¥¤ ¡ ¦¥ ¦¤¡§§§¡ ¦¦¦¦in parameters¥¥¤ ¦ ©¨¢©¤<strong>Functional</strong> <strong>Interpretation</strong> <strong>of</strong> DNSThe double-negation shift, DNS, is the principle:for arbitrary formulas .For functional interpretation one needs to solve:i.e. give.Spector solved these equations using bar-recursion <strong>and</strong>with the condition.©<strong>Functional</strong> <strong>Interpretation</strong> <strong>and</strong> <strong>Modified</strong> <strong>Realizability</strong> <strong>Interpretation</strong> <strong>of</strong> the Double-Negation Shift – p. 7/1