Pith Number

pith:PX6KH6U5

pith:2012:PX6KH6U55IYLGHN6XMF6JMQNFL

not attested not anchored not stored refs pending

An epsilon-delta characterization of a certain TTE computability notion

Dimiter Skordev

arxiv:1207.7270 v4 · 2012-07-31 · 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{PX6KH6U55IYLGHN6XMF6JMQNFL}

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	2026-05-18T03:36:26.779278Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dfca3fa9dea30b31dbebb0be4b20d2addd77e7ba8fb8e825d60f1e1c0fdfa2d

Aliases

arxiv: 1207.7270 · arxiv_version: 1207.7270v4 · doi: 10.48550/arxiv.1207.7270 · pith_short_12: PX6KH6U55IYL · pith_short_16: PX6KH6U55IYLGHN6 · pith_short_8: PX6KH6U5

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/PX6KH6U55IYLGHN6XMF6JMQNFL \
  | 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: 7dfca3fa9dea30b31dbebb0be4b20d2addd77e7ba8fb8e825d60f1e1c0fdfa2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d6c42291caf265e7684ef064b72611b4785b9a53bf92df8a7ef89a392e2be1e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-07-31T14:44:14Z",
    "title_canon_sha256": "23263cabf8cc5cc5089bfbacd5a61a0d05c85b22ce5266164f8c2c0a078d2016"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.7270",
    "kind": "arxiv",
    "version": 4
  }
}