Pith Number

pith:AMZQ7WKG

pith:2010:AMZQ7WKGOAHBYOSBD5S77AEY46

not attested not anchored not stored refs pending

Some collapsing operations for 2-dimensional precubical sets

Thomas Kahl

arxiv:1005.5443 v2 · 2010-05-29 · 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{AMZQ7WKGOAHBYOSBD5S77AEY46}

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	2026-05-18T03:56:22.855255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03330fd946700e1c3a411f65ff8098e788b1a1c813a42a76018c6170c89e595d

Aliases

arxiv: 1005.5443 · arxiv_version: 1005.5443v2 · doi: 10.48550/arxiv.1005.5443 · pith_short_12: AMZQ7WKGOAHB · pith_short_16: AMZQ7WKGOAHBYOSB · pith_short_8: AMZQ7WKG

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/AMZQ7WKGOAHBYOSBD5S77AEY46 \
  | 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: 03330fd946700e1c3a411f65ff8098e788b1a1c813a42a76018c6170c89e595d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d17414c58b9745cd5eaf92c399fd3599177ddc49b66ccc1b2f1ac78a21591b42",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2010-05-29T09:32:17Z",
    "title_canon_sha256": "1b76376e069f57df6b7915502eb33cb626692b805d32ac9499d49bfab0c25d39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.5443",
    "kind": "arxiv",
    "version": 2
  }
}