Pith Number

pith:EEJKKY5X

pith:2025:EEJKKY5X23WL3XRL4JJ5NQGTLH

not attested not anchored not stored refs pending

Modular versus Hierarchical: A Structural Signature of Topic Popularity in Mathematical Research

Brian Hepler

arxiv:2506.22946 v1 · 2025-06-28 · cs.SI · cs.CY · cs.DL · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EEJKKY5X23WL3XRL4JJ5NQGTLH}

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.

Cited by

2 papers in Pith

You Have Been LaTeXpOsEd: A Systematic Analysis of Information Leakage in Preprint Archives Using Large Language Models

Hidden Secrets in the arXiv: Discovering, Analyzing, and Preventing Unintentional Information Disclosure in Source Files of Scientific Preprints

Receipt and verification

First computed	2026-07-05T11:28:48.070377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2112a563b7d6ecbdde2be253d6c0d359f9444ed2c57db898176dd5de3486d7bd

Aliases

arxiv: 2506.22946 · arxiv_version: 2506.22946v1 · doi: 10.48550/arxiv.2506.22946 · pith_short_12: EEJKKY5X23WL · pith_short_16: EEJKKY5X23WL3XRL · pith_short_8: EEJKKY5X

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/EEJKKY5X23WL3XRL4JJ5NQGTLH \
  | 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: 2112a563b7d6ecbdde2be253d6c0d359f9444ed2c57db898176dd5de3486d7bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f8f41bb33630907d44d144eeee2eceb98a9dd2396ab5cf86153800e74ab3780",
    "cross_cats_sorted": [
      "cs.CY",
      "cs.DL",
      "math.HO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2025-06-28T16:39:57Z",
    "title_canon_sha256": "da72f2ba2bb0caad9748984fe0bd77679d57ada38cb52604e0975457ad53dc01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.22946",
    "kind": "arxiv",
    "version": 1
  }
}