Pith Number

pith:EN2CPRAG

pith:2011:EN2CPRAGFLSDU4RE4GTT2RXIQJ

not attested not anchored not stored refs pending

Distance Preserving Graph Simplification

Ning Ruan, Ruoming Jin, Yan Huang

arxiv:1110.0517 v1 · 2011-10-03 · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EN2CPRAGFLSDU4RE4GTT2RXIQJ}

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	2026-05-18T00:57:57.204396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

237427c4062ae43a7224e1a73d46e88258f945b994dab87c695f654a5afa7aeb

Aliases

arxiv: 1110.0517 · arxiv_version: 1110.0517v1 · doi: 10.48550/arxiv.1110.0517 · pith_short_12: EN2CPRAGFLSD · pith_short_16: EN2CPRAGFLSDU4RE · pith_short_8: EN2CPRAG

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/EN2CPRAGFLSDU4RE4GTT2RXIQJ \
  | 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: 237427c4062ae43a7224e1a73d46e88258f945b994dab87c695f654a5afa7aeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e0b4238455141a9f0f3bf8e20c72f3e1cb09047c9007e24790f8bff7d2ec6ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2011-10-03T21:35:58Z",
    "title_canon_sha256": "b2d46e33b806e8c8d6802101f6b57ab1e6c470f34aeafb23294be288553e7389"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.0517",
    "kind": "arxiv",
    "version": 1
  }
}