Pith Number

pith:VGCYJ7ZF

pith:2017:VGCYJ7ZFDBGLJRVPGWH52QFVRY

not attested not anchored not stored refs pending

Exceptional points in two simple textbook examples

Francisco M. Fern\'andez

arxiv:1710.00067 v1 · 2017-09-24 · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VGCYJ7ZFDBGLJRVPGWH52QFVRY}

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	2026-05-18T00:15:20.819786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a98584ff25184cb4c6af358fdd40b58e19470e6789fc3a44c53a919df85ff0dd

Aliases

arxiv: 1710.00067 · arxiv_version: 1710.00067v1 · doi: 10.48550/arxiv.1710.00067 · pith_short_12: VGCYJ7ZFDBGL · pith_short_16: VGCYJ7ZFDBGLJRVP · pith_short_8: VGCYJ7ZF

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/VGCYJ7ZFDBGLJRVPGWH52QFVRY \
  | 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: a98584ff25184cb4c6af358fdd40b58e19470e6789fc3a44c53a919df85ff0dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25b200fce7753a8b83921f80996be0c5778579dda23431263584928b76ee17e9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2017-09-24T18:31:17Z",
    "title_canon_sha256": "d1f6090a9f509842e618527c664f8a37a8c1b2e9fc244dd41ba35d4b5c3f912d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.00067",
    "kind": "arxiv",
    "version": 1
  }
}