Pith Number

pith:CBUMEFA2

pith:2015:CBUMEFA23U4G3AA3QSR6ZWY222

not attested not anchored not stored refs pending

A Spiky Ball

M\'arton Nasz\'odi

arxiv:1510.00782 v1 · 2015-10-03 · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CBUMEFA23U4G3AA3QSR6ZWY222}

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	2026-05-18T01:20:11.073566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1068c2141add386d801b84a3ecdb1ad699749057604cfcaa2368c7a6c202b9d9

Aliases

arxiv: 1510.00782 · arxiv_version: 1510.00782v1 · doi: 10.48550/arxiv.1510.00782 · pith_short_12: CBUMEFA23U4G · pith_short_16: CBUMEFA23U4G3AA3 · pith_short_8: CBUMEFA2

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/CBUMEFA23U4G3AA3QSR6ZWY222 \
  | 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: 1068c2141add386d801b84a3ecdb1ad699749057604cfcaa2368c7a6c202b9d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "044fd97b41d4d3214b51d9b3215f7c1e4ec3b08d8f55a46aeab07cebcbeaae3e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2015-10-03T06:33:15Z",
    "title_canon_sha256": "c6b65032aad0077211f7829184b7f38bd26db26c89dd08038b83c95a104ee62b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.00782",
    "kind": "arxiv",
    "version": 1
  }
}