Pith Number

pith:MBJME4KV

pith:2013:MBJME4KV5ZPQLE5NLFWPS447YM

not attested not anchored not stored refs pending

Effective Genericity and Differentiability

Rutger Kuyper, Sebastiaan A. Terwijn

arxiv:1309.3983 v2 · 2013-09-16 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MBJME4KV5ZPQLE5NLFWPS447YM}

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	2026-05-18T02:44:23.237629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6052c27155ee5f0593ad596cf9739fc3356d69d4af9cbae3e2c712859bc74cc5

Aliases

arxiv: 1309.3983 · arxiv_version: 1309.3983v2 · doi: 10.48550/arxiv.1309.3983 · pith_short_12: MBJME4KV5ZPQ · pith_short_16: MBJME4KV5ZPQLE5N · pith_short_8: MBJME4KV

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/MBJME4KV5ZPQLE5NLFWPS447YM \
  | 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: 6052c27155ee5f0593ad596cf9739fc3356d69d4af9cbae3e2c712859bc74cc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6af26900ef35431e434c0c3c0cb49a3b5e0892ef7255f3144789a8f862f1886",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2013-09-16T14:51:41Z",
    "title_canon_sha256": "097508b528eaace0470669490899ed612ec017ad35e98ad5ee6e4161769593c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.3983",
    "kind": "arxiv",
    "version": 2
  }
}