Pith Number

pith:EFODEKVG

pith:2013:EFODEKVGA6NPB7MPKKR2WAOMWY

not attested not anchored not stored refs pending

The Swap Matching Problem Revisited

A.S.M. Sohidull Islam, Costas S. Iliopoulos, M. Sohel Rahman, Pritom Ahmed

arxiv:1309.1981 v2 · 2013-09-08 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EFODEKVGA6NPB7MPKKR2WAOMWY}

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	2026-05-18T03:12:59.539269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

215c322aa6079af0fd8f52a3ab01ccb6356ba5beb309daa045c1d44411dbc678

Aliases

arxiv: 1309.1981 · arxiv_version: 1309.1981v2 · doi: 10.48550/arxiv.1309.1981 · pith_short_12: EFODEKVGA6NP · pith_short_16: EFODEKVGA6NPB7MP · pith_short_8: EFODEKVG

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/EFODEKVGA6NPB7MPKKR2WAOMWY \
  | 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: 215c322aa6079af0fd8f52a3ab01ccb6356ba5beb309daa045c1d44411dbc678

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c1442e722220faad218de590dd50e7a7adb217a97e168b4499d7aa8cca90f46",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-09-08T17:15:21Z",
    "title_canon_sha256": "f189fda5ee5bee2f6f9a4130afe982d3231f3472cfd8cae1cf40fa73732ca584"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1981",
    "kind": "arxiv",
    "version": 2
  }
}