Pith Number

pith:V6UNS6HD

pith:2018:V6UNS6HDP5ENISFWKE4EGJ3WIO

not attested not anchored not stored refs pending

A(nother) model for the framed little disks operad

Erik Lindell, Thomas Willwacher

arxiv:1809.06918 v1 · 2018-09-18 · math.QA · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V6UNS6HDP5ENISFWKE4EGJ3WIO}

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	2026-05-18T00:05:21.159523Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

afa8d978e37f48d448b6513843277643a9c95af22a870aad4d91e41cdb00500e

Aliases

arxiv: 1809.06918 · arxiv_version: 1809.06918v1 · doi: 10.48550/arxiv.1809.06918 · pith_short_12: V6UNS6HDP5EN · pith_short_16: V6UNS6HDP5ENISFW · pith_short_8: V6UNS6HD

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/V6UNS6HDP5ENISFWKE4EGJ3WIO \
  | 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: afa8d978e37f48d448b6513843277643a9c95af22a870aad4d91e41cdb00500e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50b6a759e8e600561f554674876223c00df0dda8d5ef4149619b1b7af5c5c0d2",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.QA",
    "submitted_at": "2018-09-18T20:20:50Z",
    "title_canon_sha256": "9d7f5269b70f6657cb1225defce384cd86d454b5eaab14b7207c740501ccbd32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.06918",
    "kind": "arxiv",
    "version": 1
  }
}