Pith Number

pith:RXJIIW32

pith:2017:RXJIIW32I7G6KK2DXEUIMO6WKU

not attested not anchored not stored refs pending

Parsing with Traces: An $O(n^4)$ Algorithm and a Structural Representation

Dan Klein, Jonathan K. Kummerfeld

arxiv:1707.04221 v1 · 2017-07-13 · cs.CL · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RXJIIW32I7G6KK2DXEUIMO6WKU}

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	2026-07-05T01:07:47.557068Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8dd2845b7a47cde52b43b928863bd6550a7a0a2cec765b6a9c282b0549979eaa

Aliases

arxiv: 1707.04221 · arxiv_version: 1707.04221v1 · doi: 10.48550/arxiv.1707.04221 · pith_short_12: RXJIIW32I7G6 · pith_short_16: RXJIIW32I7G6KK2D · pith_short_8: RXJIIW32

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/RXJIIW32I7G6KK2DXEUIMO6WKU \
  | 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: 8dd2845b7a47cde52b43b928863bd6550a7a0a2cec765b6a9c282b0549979eaa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b82dbd623576226f1fa5dded60ad1f11617008cb9d31b014a57cf0f0de2ee63a",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2017-07-13T16:52:08Z",
    "title_canon_sha256": "0f0d9e3120d8853d99ffb573cb35dd5c10f10370c51ce50a6223d61a85a906a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.04221",
    "kind": "arxiv",
    "version": 1
  }
}