Pith Number

pith:RCELX6AK

pith:2009:RCELX6AKEBA64VCTH5MAUAZMMD

not attested not anchored not stored refs pending

Operator system structures on ordered spaces

Ivan Todorov, Mark Tomforde, Vern Paulsen

arxiv:0904.3783 v2 · 2009-04-24 · math.OA

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	2026-05-18T02:58:03.332131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8888bbf80a2041ee54533f580a032c60e70b71819649ba2f570002d724e6b391

Aliases

arxiv: 0904.3783 · arxiv_version: 0904.3783v2 · doi: 10.48550/arxiv.0904.3783 · pith_short_12: RCELX6AKEBA6 · pith_short_16: RCELX6AKEBA64VCT · pith_short_8: RCELX6AK

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/RCELX6AKEBA64VCTH5MAUAZMMD \
  | 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: 8888bbf80a2041ee54533f580a032c60e70b71819649ba2f570002d724e6b391

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcd027b2fa413c10fbc945e06c0ea6e43672423a83183332f4deb38a0f2090c3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2009-04-24T02:51:39Z",
    "title_canon_sha256": "97c628fc9ef19608fb8b44fe936b62b20e89dd2c18382a3181adee1b636f8540"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3783",
    "kind": "arxiv",
    "version": 2
  }
}