Pith Number

pith:UL5L4K2Q

pith:2018:UL5L4K2QEECXID2RWH6NEQ5YQJ

not attested not anchored not stored refs pending

Higher de Rham epsilon factors

Michael Groechenig

arxiv:1807.03190 v1 · 2018-07-09 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UL5L4K2QEECXID2RWH6NEQ5YQJ}

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	2026-05-18T00:11:12.425033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2fabe2b502105740f51b1fcd243b8827a46aca45ceb81bbbbc39bedeef2de75

Aliases

arxiv: 1807.03190 · arxiv_version: 1807.03190v1 · doi: 10.48550/arxiv.1807.03190 · pith_short_12: UL5L4K2QEECX · pith_short_16: UL5L4K2QEECXID2R · pith_short_8: UL5L4K2Q

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/UL5L4K2QEECXID2RWH6NEQ5YQJ \
  | 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: a2fabe2b502105740f51b1fcd243b8827a46aca45ceb81bbbbc39bedeef2de75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3977422ee206e91053bc785d9c23d874c584187b5921852e740dbcdfb16c46de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-07-09T14:24:56Z",
    "title_canon_sha256": "0f67cdbdf0eb6ff948cdf8407ad894b8ee05bc2b10e18d22de181a9b27125c99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.03190",
    "kind": "arxiv",
    "version": 1
  }
}