Pith Number

pith:SPCDLECW

pith:2012:SPCDLECW7CPVAEIC627DOIHOCP

not attested not anchored not stored refs pending

Spaces with high topological complexity

Aleksandra Franc, Petar Pave\v{s}i\'c

arxiv:1204.5152 v2 · 2012-04-23 · 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{SPCDLECW7CPVAEIC627DOIHOCP}

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	2026-05-18T03:42:33.872045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93c4359056f89f501102f6be3720ee13c5f78826cb52b7a2860966b55b0cedf6

Aliases

arxiv: 1204.5152 · arxiv_version: 1204.5152v2 · doi: 10.48550/arxiv.1204.5152 · pith_short_12: SPCDLECW7CPV · pith_short_16: SPCDLECW7CPVAEIC · pith_short_8: SPCDLECW

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/SPCDLECW7CPVAEIC627DOIHOCP \
  | 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: 93c4359056f89f501102f6be3720ee13c5f78826cb52b7a2860966b55b0cedf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d8bb4f9ffee42462e1beb48e4b00e7a6bd68fe031a9e52a50f4af6adca7ebd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-04-23T19:28:05Z",
    "title_canon_sha256": "9a2f015b0bf7efdb0a1ee6c1923f23ba719dba9a6747afba15cc54147ce2067e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5152",
    "kind": "arxiv",
    "version": 2
  }
}