Pith Number

pith:QLWGV6MZ

pith:2015:QLWGV6MZ2BSOYZBJGLXOACYMUD

not attested not anchored not stored refs pending

Realizing spaces as classifying spaces

Gregory Lupton, Samuel Bruce Smith

arxiv:1502.05625 v1 · 2015-02-19 · 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{QLWGV6MZ2BSOYZBJGLXOACYMUD}

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	2026-05-18T02:26:45.939116Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82ec6af999d064ec642932eee00b0ca0e6755f139111a418a39ee3c8589658e2

Aliases

arxiv: 1502.05625 · arxiv_version: 1502.05625v1 · doi: 10.48550/arxiv.1502.05625 · pith_short_12: QLWGV6MZ2BSO · pith_short_16: QLWGV6MZ2BSOYZBJ · pith_short_8: QLWGV6MZ

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/QLWGV6MZ2BSOYZBJGLXOACYMUD \
  | 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: 82ec6af999d064ec642932eee00b0ca0e6755f139111a418a39ee3c8589658e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "933cd0a42d86990db4008fda04b3eac082fe47d9ff8f502733e725ca26f6f428",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-02-19T16:56:44Z",
    "title_canon_sha256": "1145be2b6e7da2f16df803b428e58636d87d94021be853bc8a46c590e270c927"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05625",
    "kind": "arxiv",
    "version": 1
  }
}