Pith Number

pith:RXJMEJCS

pith:2006:RXJMEJCSNV3MYWTYAJ7EK7ICXU

not attested not anchored not stored refs pending

Lectures on n-Categories and Cohomology

John C. Baez, Michael Shulman

arxiv:math/0608420 v2 · 2006-08-16 · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RXJMEJCSNV3MYWTYAJ7EK7ICXU}

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	2026-05-17T23:48:53.394331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8dd2c224526d76cc5a78027e457d02bd0f2469bb2704fab26cdf158adf3cfac9

Aliases

arxiv: math/0608420 · arxiv_version: math/0608420v2 · doi: 10.48550/arxiv.math/0608420 · pith_short_12: RXJMEJCSNV3M · pith_short_16: RXJMEJCSNV3MYWTY · pith_short_8: RXJMEJCS

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/RXJMEJCSNV3MYWTYAJ7EK7ICXU \
  | 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: 8dd2c224526d76cc5a78027e457d02bd0f2469bb2704fab26cdf158adf3cfac9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee06706afe2c0361761e04149b8cf6eb23f8d120c842492336e399077e4cee26",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.CT",
    "submitted_at": "2006-08-16T06:45:55Z",
    "title_canon_sha256": "48e41df74ebd28f7a6b18db9461d2149b155d9fc5ce7e0856a1b581cc572b269"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0608420",
    "kind": "arxiv",
    "version": 2
  }
}