trustmebro.to/r/…
✓ checked
trust me, bro:
here is the receipt.
the claim

Two subspaces are orthogonal if every vector in the first subspace is orthogonal to every vector in the second.

the verdict
COMMON KNOWLEDGE
Legacy classification; evidence review pending
Recorded sources
no sources on either side

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that two subspaces are orthogonal if every vector in the first subspace is orthogonal to every vector in the second?

Two subspaces are orthogonal if and only if every vector in the first subspace is orthogonal to every vector in the second, which is a standard definition in linear algebra and requires no citation.

Verdict: COMMON KNOWLEDGE · 0 sources for, 0 against · Last checked

The analysis

The claim states the fundamental definition of orthogonality between two subspaces in linear algebra. It is a direct definition and common mathematical knowledge, so no citation or empirical paper is required to verify it.

What does the evidence say?

The claim states the fundamental definition of orthogonality between two subspaces in linear algebra. It is a direct definition and common mathematical knowledge, so no citation or empirical paper is required to verify it.

Receipt History
first checked04 Aug 2026
judged → COMMON KNOWLEDGE · 9504 Aug 2026
Anyone with this link can read the claim and its public receipt, including any personal information in that text. Open permanent receipt.
Check your own claim
Challenge the receipt
Requests are recorded for review. This does not start an automatic check or guarantee a response time.

Citation formatting by citeproc-js (Frank Bennett) and the Citation Style Language project. Source and licenses.

This receipt is an automated verdict against our published method · not an opinion about any author or publication.
Terms · Privacy · How verdicts work