Pith Number

pith:PXAPDHSA

pith:2015:PXAPDHSALKL3DSD2ZXPBR5CFWO

not attested not anchored not stored refs pending

Nearly optimal classification for semimetrics

Aryeh Kontorovich, Lee-Ad Gottlieb

arxiv:1502.06208 v1 · 2015-02-22 · cs.LG · cs.CC · 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{PXAPDHSALKL3DSD2ZXPBR5CFWO}

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	2026-05-18T02:26:37.795348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dc0f19e405a97b1c87acdde18f445b3b84a79e8404e8f3c625cbedc77f8ad0e

Aliases

arxiv: 1502.06208 · arxiv_version: 1502.06208v1 · doi: 10.48550/arxiv.1502.06208 · pith_short_12: PXAPDHSALKL3 · pith_short_16: PXAPDHSALKL3DSD2 · pith_short_8: PXAPDHSA

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/PXAPDHSALKL3DSD2ZXPBR5CFWO \
  | 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: 7dc0f19e405a97b1c87acdde18f445b3b84a79e8404e8f3c625cbedc77f8ad0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df3e34198c93d987eed45178b9495d0c0bc1b06ba413c9725cc795f86fce6f16",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-02-22T10:42:52Z",
    "title_canon_sha256": "0ec6052c56156b2b50489e1b56b4d563ccf7cfdce1707f65c0b5b4985210af3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.06208",
    "kind": "arxiv",
    "version": 1
  }
}