Pith Number

pith:PFLFXC3Z

pith:2007:PFLFXC3ZOQBMG7D2ABAYTKBXIB

not attested not anchored not stored refs pending

Iterative Rounding for the Closest String Problem

Jing-Chao Chen

arxiv:0705.0561 v2 · 2007-05-04 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PFLFXC3ZOQBMG7D2ABAYTKBXIB}

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	2026-05-18T04:22:30.033355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79565b8b797402c37c7a004189a83740526e7d81fb2bce945056fa0f3585f244

Aliases

arxiv: 0705.0561 · arxiv_version: 0705.0561v2 · doi: 10.48550/arxiv.0705.0561 · pith_short_12: PFLFXC3ZOQBM · pith_short_16: PFLFXC3ZOQBMG7D2 · pith_short_8: PFLFXC3Z

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/PFLFXC3ZOQBMG7D2ABAYTKBXIB \
  | 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: 79565b8b797402c37c7a004189a83740526e7d81fb2bce945056fa0f3585f244

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a638adb7994b65d1f1eafdb1e81b8001f14689d89582852afdcb1a22fbf2949",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2007-05-04T03:01:42Z",
    "title_canon_sha256": "4b809f61184ef80fcd5615c443a9318446bb7366c056f191393d863c6df1c4ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.0561",
    "kind": "arxiv",
    "version": 2
  }
}