Pith Number

pith:DUM2C6NY

pith:2013:DUM2C6NY3N4ICUBXECLFNAZKSX

not attested not anchored not stored refs pending

A Twisted Version of the Classifying Space Functor

Asli Guclukan Ilhan, Ozgun Unlu

arxiv:1302.6014 v3 · 2013-02-25 · 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{DUM2C6NY3N4ICUBXECLFNAZKSX}

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	2026-05-17T23:57:08.073438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d19a179b8db78815037209656832a95ec0752916d85fd97b4d1c76cb1d88181

Aliases

arxiv: 1302.6014 · arxiv_version: 1302.6014v3 · doi: 10.48550/arxiv.1302.6014 · pith_short_12: DUM2C6NY3N4I · pith_short_16: DUM2C6NY3N4ICUBX · pith_short_8: DUM2C6NY

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/DUM2C6NY3N4ICUBXECLFNAZKSX \
  | 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: 1d19a179b8db78815037209656832a95ec0752916d85fd97b4d1c76cb1d88181

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e99e5ab450bc1d732e0be3475cdd06df942165ec3e5bb67407346705451771f9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2013-02-25T08:26:07Z",
    "title_canon_sha256": "909a228f32637564d159a767a905b6d0024c8cd473f687d57a333791609cf47d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6014",
    "kind": "arxiv",
    "version": 3
  }
}