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Virgo early-type galaxies with absolute magnitudes $\\mathfrak{M}_B\\gtrsim-20.5$ mag have $B$-band luminosities that scale with the square of the stellar velocity dispersion: $L_B\\propto\\sigma^2$. We show that the non-linear `super-quadratic' relation $M_{\\rm bh}\\propto L_B^2$-$L_B^{2.5}$ from Graham & Scott yields black hole masses, $M_{\\rm bh}$, that agree with the $M_{\\rm bh}$-$\\sigma$ relatio"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1812.01231","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-12-04T05:54:11Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"90a3e609d1912490dd6dcf18445f0596a53d72109d8d13eaac08c09e5103c142","abstract_canon_sha256":"c63a1572fac1bc7cea82b1de572a1a760c0be71de7284ae89b411cd9bbc81328"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:43.342026Z","signature_b64":"4g1rnMTELHZkiBMBp3V3sgQceBRUlXxgtq3ZFuyzwLpFzB0CRsyxR23ZtvP53V/tlIS5XJxy65q4TTJjDBztCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5d58902e95d2be33d02c3ffedd08874d403a51284dc121aba6109d81762ddb3","last_reissued_at":"2026-05-17T23:48:43.341577Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:43.341577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Expected intermediate-mass black holes in the Virgo cluster. 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