Pith Number

pith:7LOXY7JK

pith:2008:7LOXY7JKCEJHI2YVRP7QLDLXDW

not attested not anchored not stored refs pending

A simple intrinsic reduced-observer for geodesic flow

Silvere Bonnabel

arxiv:0811.3709 v2 · 2008-11-22 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7LOXY7JKCEJHI2YVRP7QLDLXDW}

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	2026-05-18T04:40:08.441458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fadd7c7d2a1112746b158bff058d771dbfcd74e3cbc6d88e810466bd60e4e9b2

Aliases

arxiv: 0811.3709 · arxiv_version: 0811.3709v2 · doi: 10.48550/arxiv.0811.3709 · pith_short_12: 7LOXY7JKCEJH · pith_short_16: 7LOXY7JKCEJHI2YV · pith_short_8: 7LOXY7JK

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/7LOXY7JKCEJHI2YVRP7QLDLXDW \
  | 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: fadd7c7d2a1112746b158bff058d771dbfcd74e3cbc6d88e810466bd60e4e9b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3be59f9fc625afb14a196a8d6b02957b2d6c965b3c44d4d4490efa90bc9c22c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2008-11-22T22:22:04Z",
    "title_canon_sha256": "482ee5015a38cc366fd1c370748655836681dcc60c17c35fbadbcd8e8e3e12db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.3709",
    "kind": "arxiv",
    "version": 2
  }
}