Pith Number

pith:I42DH6SY

pith:2019:I42DH6SYWSCE2NUANQ7YEV7TPS

not attested not anchored not stored refs pending

Which quartic polynomials have a hyperbolic antiderivative?

Rajesh Pereira

arxiv:1901.08156 v2 · 2019-01-23 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I42DH6SYWSCE2NUANQ7YEV7TPS}

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	2026-05-17T23:48:16.712043Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

473433fa58b4844d36806c3f8257f37ca12dcce25f31cb132ba53db816080d6b

Aliases

arxiv: 1901.08156 · arxiv_version: 1901.08156v2 · doi: 10.48550/arxiv.1901.08156 · pith_short_12: I42DH6SYWSCE · pith_short_16: I42DH6SYWSCE2NUA · pith_short_8: I42DH6SY

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/I42DH6SYWSCE2NUANQ7YEV7TPS \
  | 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: 473433fa58b4844d36806c3f8257f37ca12dcce25f31cb132ba53db816080d6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00ea90551a895a1eb7c1f2078b4abdf77df5c054801a49dfb8febc916b9a7172",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2019-01-23T22:32:53Z",
    "title_canon_sha256": "083219fd3f106cff0244152fb73a9080affda43bab3943b654479b81412c6fd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.08156",
    "kind": "arxiv",
    "version": 2
  }
}