Pith Number

pith:I6X74BFD

pith:2013:I6X74BFDWSIAHG5JSDEKOTSWKA

not attested not anchored not stored refs pending

Variable projection methods for approximate (greatest) common divisor computations

Ivan Markovsky, Konstantin Usevich

arxiv:1304.6962 v2 · 2013-04-25 · math.OC · 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{I6X74BFDWSIAHG5JSDEKOTSWKA}

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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	2026-05-18T01:27:55.021635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47affe04a3b490039ba990c8a74e56503673a9a2451ce58efbcf1500fc5a95d4

Aliases

arxiv: 1304.6962 · arxiv_version: 1304.6962v2 · doi: 10.48550/arxiv.1304.6962 · pith_short_12: I6X74BFDWSIA · pith_short_16: I6X74BFDWSIAHG5J · pith_short_8: I6X74BFD

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/I6X74BFDWSIAHG5JSDEKOTSWKA \
  | 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: 47affe04a3b490039ba990c8a74e56503673a9a2451ce58efbcf1500fc5a95d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b245c84f43f10e7d1c68e1c700870bcb1f52615d056a19c878c086b6e6d2c939",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-04-25T17:02:07Z",
    "title_canon_sha256": "052b174ce6aab0bd95cd02ce2146742fbfb750ff605b5ec96518e6d7ecaa0934"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6962",
    "kind": "arxiv",
    "version": 2
  }
}