Pith Number

pith:WMRVJ3P7

pith:2020:WMRVJ3P7UMIH6QH4MBU3QEJOQR

not attested not anchored not stored refs pending

Constructing categorical idempotents

Matthew Hogancamp

arxiv:2002.08905 v2 · 2020-02-20 · math.AT · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WMRVJ3P7UMIH6QH4MBU3QEJOQR}

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

1 paper in Pith

Handle decompositions and the 1-dimensional inputs skein lasagna module

Receipt and verification

First computed	2026-07-05T00:43:08.052341Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b32354edffa3107f40fc6069b8112e8458d3b2838e8b183280c80780cf91d063

Aliases

arxiv: 2002.08905 · arxiv_version: 2002.08905v2 · doi: 10.48550/arxiv.2002.08905 · pith_short_12: WMRVJ3P7UMIH · pith_short_16: WMRVJ3P7UMIH6QH4 · pith_short_8: WMRVJ3P7

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/WMRVJ3P7UMIH6QH4MBU3QEJOQR \
  | 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: b32354edffa3107f40fc6069b8112e8458d3b2838e8b183280c80780cf91d063

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7e24c137a75beb7b3ee1c8725d386fb114e31e2ed445d322de90ff9674afa83",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2020-02-20T17:50:29Z",
    "title_canon_sha256": "a2538a04c20ec93fcecf54e903e8cf04982c4e49feb61f3b39bed0c2ae8a23d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.08905",
    "kind": "arxiv",
    "version": 2
  }
}