Pith Number

pith:FHDXE6F4

pith:2018:FHDXE6F4BRAPKMCRFSYK5NAWQX

not attested not anchored not stored refs pending

Derivatives of flat functions

Hiroki Kodama, Kazuo Masuda, Yoshihiko Mitsumatsu

arxiv:1805.01879 v1 · 2018-05-04 · math.GM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FHDXE6F4BRAPKMCRFSYK5NAWQX}

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	2026-05-18T00:16:46.390912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29c77278bc0c40f530512cb0aeb41685de04e35b3f432be907a004bcdf65bc36

Aliases

arxiv: 1805.01879 · arxiv_version: 1805.01879v1 · doi: 10.48550/arxiv.1805.01879 · pith_short_12: FHDXE6F4BRAP · pith_short_16: FHDXE6F4BRAPKMCR · pith_short_8: FHDXE6F4

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/FHDXE6F4BRAPKMCRFSYK5NAWQX \
  | 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: 29c77278bc0c40f530512cb0aeb41685de04e35b3f432be907a004bcdf65bc36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22ba4af0f0e7cf96a764d5acc72d73ca260cd9e5b60984994ade78f038aea486",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2018-05-04T17:50:26Z",
    "title_canon_sha256": "848fd138cf1cfc15c6704f76917437900bcfce15eda2ea2f77ba72740d94aca5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.01879",
    "kind": "arxiv",
    "version": 1
  }
}