Pith Number

pith:DKMLVSRI

pith:2017:DKMLVSRISXO323PC4BAJPJE46W

not attested not anchored not stored refs pending

Sigmoid functions and exponential Riordan arrays

Paul Barry

arxiv:1702.04778 v1 · 2017-02-13 · 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{DKMLVSRISXO323PC4BAJPJE46W}

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	2026-05-18T00:50:37.123649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a98baca2895ddbd6de2e04097a49cf590784c30dc8b5ee04f60aafe47a8ebcd

Aliases

arxiv: 1702.04778 · arxiv_version: 1702.04778v1 · doi: 10.48550/arxiv.1702.04778 · pith_short_12: DKMLVSRISXO3 · pith_short_16: DKMLVSRISXO323PC · pith_short_8: DKMLVSRI

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/DKMLVSRISXO323PC4BAJPJE46W \
  | 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: 1a98baca2895ddbd6de2e04097a49cf590784c30dc8b5ee04f60aafe47a8ebcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb65d6c544c18dd05f903965e34f01646d6eed7b7e47ce103f47887b643284af",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2017-02-13T22:49:57Z",
    "title_canon_sha256": "c8b418034e46424a2131599f6a52bde8ff18f3f2ef47a9a460c4a64385675276"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.04778",
    "kind": "arxiv",
    "version": 1
  }
}