Pith Number

pith:EAS4ZBYL

pith:2019:EAS4ZBYLPHKYQXBY2NUCI6EMIQ

not attested not anchored not stored refs pending

Cauchy-Riemann equations for free noncommutative functions

E.M. Klem, S ter Horst

arxiv:1906.09014 v1 · 2019-06-21 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EAS4ZBYLPHKYQXBY2NUCI6EMIQ}

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	2026-05-17T23:42:47.062242Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2025cc870b79d5885c38d36824788c44138a9a52f418e81a844c598f694cc9e0

Aliases

arxiv: 1906.09014 · arxiv_version: 1906.09014v1 · doi: 10.48550/arxiv.1906.09014 · pith_short_12: EAS4ZBYLPHKY · pith_short_16: EAS4ZBYLPHKYQXBY · pith_short_8: EAS4ZBYL

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/EAS4ZBYLPHKYQXBY2NUCI6EMIQ \
  | 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: 2025cc870b79d5885c38d36824788c44138a9a52f418e81a844c598f694cc9e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0e946dc6030ab247bfa5778ff31f9747dcd3fba35f683fd535a01b2d3726d8d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2019-06-21T08:58:50Z",
    "title_canon_sha256": "6ad5c0881bf20205d6b245eaa6be618c53609cfa1e306fd0e1ec49adfd317d20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.09014",
    "kind": "arxiv",
    "version": 1
  }
}