Pith Number

pith:377RGW5P

pith:2010:377RGW5PWLOKN4LBLC2IQWBSNZ

not attested not anchored not stored refs pending

Improving PPM Algorithm Using Dictionaries

Farooq Khan, Jianzhong (Charlie) Zhang, Yichuan Hu, Ying Li

arxiv:1012.3790 v2 · 2010-12-17 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{377RGW5PWLOKN4LBLC2IQWBSNZ}

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	2026-05-18T02:23:07.019208Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfff135bafb2dca6f16158b48858326e5873cf9b9566d1d35577502e7d8917bb

Aliases

arxiv: 1012.3790 · arxiv_version: 1012.3790v2 · doi: 10.48550/arxiv.1012.3790 · pith_short_12: 377RGW5PWLOK · pith_short_16: 377RGW5PWLOKN4LB · pith_short_8: 377RGW5P

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/377RGW5PWLOKN4LBLC2IQWBSNZ \
  | 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: dfff135bafb2dca6f16158b48858326e5873cf9b9566d1d35577502e7d8917bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d59578f1799cda270954c3699374249c5b053d1b349bf9a0f42888026491623",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2010-12-17T00:38:58Z",
    "title_canon_sha256": "d6e728bbc1eaa4b7edbe01c066db5e0fa5c7f5b29942443ad87b5a6b4650f152"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.3790",
    "kind": "arxiv",
    "version": 2
  }
}