Pith Number

pith:4QPV4ZOW

pith:2011:4QPV4ZOWGGI2JU2IQLCV6FRCEN

not attested not anchored not stored refs pending

Qualitative System Identification from Imperfect Data

Ashwin Srinivasan, George M. Coghill, Ross D. King

arxiv:1111.0051 v1 · 2011-10-31 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4QPV4ZOWGGI2JU2IQLCV6FRCEN}

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	2026-05-18T04:09:46.557578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e41f5e65d63191a4d34882c55f162223574003c9b686c4ef9c1d4138b445d548

Aliases

arxiv: 1111.0051 · arxiv_version: 1111.0051v1 · doi: 10.48550/arxiv.1111.0051 · pith_short_12: 4QPV4ZOWGGI2 · pith_short_16: 4QPV4ZOWGGI2JU2I · pith_short_8: 4QPV4ZOW

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/4QPV4ZOWGGI2JU2IQLCV6FRCEN \
  | 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: e41f5e65d63191a4d34882c55f162223574003c9b686c4ef9c1d4138b445d548

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70f18db829396e8efe8fda48fc24143d10ecb088f55bdd882aef7a5ac70c1779",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2011-10-31T22:02:30Z",
    "title_canon_sha256": "3a8a807255b3a5fd326b4484e28ceeb26e321108b4eb5cba6bcc78fe2901b38c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.0051",
    "kind": "arxiv",
    "version": 1
  }
}