Pith Number

pith:I2PFX233

pith:2026:I2PFX23326DM4XTIZIDJKWML44

not attested not anchored not stored refs pending

Quasi-SVD: Learning a Lie-constrained matrix factorisation for real-time imaging

Christopher Hahne

arxiv:2607.25967 v1 · 2026-07-28 · cs.CV · cs.LG · cs.NA · math.NA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I2PFX23326DM4XTIZIDJKWML44}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-29T01:26:16.938585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

469e5beb7bd786ce5e68ca0695598be705d376ba36d2c92866767e597df49158

Aliases

arxiv: 2607.25967 · arxiv_version: 2607.25967v1 · doi: 10.48550/arxiv.2607.25967 · pith_short_12: I2PFX23326DM · pith_short_16: I2PFX23326DM4XTI · pith_short_8: I2PFX233

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/I2PFX23326DM4XTIZIDJKWML44 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 469e5beb7bd786ce5e68ca0695598be705d376ba36d2c92866767e597df49158

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6a7d4e23dccb7cf25d2a405ab337ac8dcfa49e65c6ce7a473dfc4935ffba79e",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.NA"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-07-28T16:47:59Z",
    "title_canon_sha256": "abb76307c26a879add9c6bc03d94a254eb094fd44c75336d557b87b95bc19c43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.25967",
    "kind": "arxiv",
    "version": 1
  }
}