Pith Number

pith:D4O4YNDQ

pith:2019:D4O4YNDQPZKFYZ3O4LHXQTHTP4

not attested not anchored not stored refs pending

On local analysis

Felipe Cucker, Teresa Krick

arxiv:1905.08321 v1 · 2019-05-20 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D4O4YNDQPZKFYZ3O4LHXQTHTP4}

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	2026-05-17T23:45:43.658540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f1dcc34707e545c676ee2cf784cf37f3b5da5f23a7f9a60bf265e593c851e1f

Aliases

arxiv: 1905.08321 · arxiv_version: 1905.08321v1 · doi: 10.48550/arxiv.1905.08321 · pith_short_12: D4O4YNDQPZKF · pith_short_16: D4O4YNDQPZKFYZ3O · pith_short_8: D4O4YNDQ

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/D4O4YNDQPZKFYZ3O4LHXQTHTP4 \
  | 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: 1f1dcc34707e545c676ee2cf784cf37f3b5da5f23a7f9a60bf265e593c851e1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b5c343de3b9405832a08786a4110036b41003902a05892ac630e46f7343e87b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-20T19:52:07Z",
    "title_canon_sha256": "7b2ba318d2cae81df5c8bafaf54fed4797610172bcbfa51965f239a3adcfef95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.08321",
    "kind": "arxiv",
    "version": 1
  }
}