Determine Whether the Given Proposition Is a Logical Truth of PL

question 2

Essay

determine whether the given proposition is a logical truth of PL or not. If it is a logical truth, provide a proof. If it is not a logical truth, provide a false valuation.
-[(D ⊃ E) ⊃ F] ⊃ [D ⊃ (E ⊃ F)]

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Definitions:

Secondary Market

The secondary market is where previously issued financial instruments such as stocks and bonds are bought and sold, as opposed to their initial issuance in the primary market.

Organizational Structure

The system of tasks, workflows, reporting relationships, and communication channels that link together the work of diverse individuals and groups in a coherent way.

Chief Executive Officer

The highest-ranking executive in a company, responsible for making major corporate decisions, managing the overall operations and resources of a company, and acting as the main point of communication between the board of directors and corporate operations.

Sole Proprietorship

A business owned and operated by one person, where there is no legal distinction between the owner and the business entity.