Pith Number

pith:6IN33J57

pith:2017:6IN33J57SB3D6R4DHZN2HC3K72

not attested not anchored not stored refs pending

Strong homotopy types of acyclic categories and $\Delta$-complexes

Kohei Tanaka

arxiv:1707.01179 v1 · 2017-07-04 · 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{6IN33J57SB3D6R4DHZN2HC3K72}

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	2026-05-18T00:40:53.515014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f21bbda7bf90763f47833e5ba38b6afeb69386211b788e1e13fd0f3587cd618e

Aliases

arxiv: 1707.01179 · arxiv_version: 1707.01179v1 · doi: 10.48550/arxiv.1707.01179 · pith_short_12: 6IN33J57SB3D · pith_short_16: 6IN33J57SB3D6R4D · pith_short_8: 6IN33J57

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/6IN33J57SB3D6R4DHZN2HC3K72 \
  | 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: f21bbda7bf90763f47833e5ba38b6afeb69386211b788e1e13fd0f3587cd618e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2eba311b2964a75d0769bdf6792c6832b9e619a4702cd17140f8d4c078a2c89",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-07-04T23:15:45Z",
    "title_canon_sha256": "4ecb8397d52d562a70dcadee6bc1632a6f13811b329028514f65bd0e483a5f06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.01179",
    "kind": "arxiv",
    "version": 1
  }
}