Pith Number

pith:GMRB76Z3

pith:2016:GMRB76Z3WMGUR7LU2I2EP2F25U

not attested not anchored not stored refs pending

Interval Enclosures of Upper Bounds of Roundoff Errors using Semidefinite Programming

Victor Magron

arxiv:1611.01318 v4 · 2016-11-04 · cs.NA · math.OC

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

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	2026-05-18T00:23:56.947342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33221ffb3bb30d48fd74d23447e8baed0d17370c7f8cc41017a1dcedaa0c3dd1

Aliases

arxiv: 1611.01318 · arxiv_version: 1611.01318v4 · doi: 10.48550/arxiv.1611.01318 · pith_short_12: GMRB76Z3WMGU · pith_short_16: GMRB76Z3WMGUR7LU · pith_short_8: GMRB76Z3

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/GMRB76Z3WMGUR7LU2I2EP2F25U \
  | 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: 33221ffb3bb30d48fd74d23447e8baed0d17370c7f8cc41017a1dcedaa0c3dd1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "588ae851d55edecfe58082e85d8ad6ef7b916e49ac35de1a45f2769ad14cf918",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2016-11-04T10:43:13Z",
    "title_canon_sha256": "43590991f4d41bd4817e78dd0e4a56b9e5e4a4615c3928b68e6459c93f487e7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.01318",
    "kind": "arxiv",
    "version": 4
  }
}