Pith Number

pith:7Z3J2ANV

pith:2013:7Z3J2ANVQALOOGS74AY6R7OE2D

not attested not anchored not stored refs pending

Thinking like Archimedes with a 3D printer

Elizabeth Slavkovsky, Oliver Knill

arxiv:1301.5027 v2 · 2013-01-21 · math.HO · cs.ET

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7Z3J2ANVQALOOGS74AY6R7OE2D}

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	2026-05-18T03:35:25.012157Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe769d01b58016e71a5fe031e8fdc4d0e3d5b5bb3eddea2568b58beedf7b6884

Aliases

arxiv: 1301.5027 · arxiv_version: 1301.5027v2 · doi: 10.48550/arxiv.1301.5027 · pith_short_12: 7Z3J2ANVQALO · pith_short_16: 7Z3J2ANVQALOOGS7 · pith_short_8: 7Z3J2ANV

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/7Z3J2ANVQALOOGS74AY6R7OE2D \
  | 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: fe769d01b58016e71a5fe031e8fdc4d0e3d5b5bb3eddea2568b58beedf7b6884

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c23e924cbb3c7798e6292d7bfa8563c9890462e6c22607e00c5b57a9db40a85e",
    "cross_cats_sorted": [
      "cs.ET"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2013-01-21T22:19:38Z",
    "title_canon_sha256": "62838fe94f7515ffb549e94b7f80c3678fd428aa18e6882ad51cbe44d1c434be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5027",
    "kind": "arxiv",
    "version": 2
  }
}