Pith Number

pith:7AZ4DUW7

pith:2016:7AZ4DUW7PROAXT55HOCSISZ4KV

not attested not anchored not stored refs pending

On homology of complements of compact sets in Hilbert Cube

Alexander Dranishnikov, Ashwini Amarasinghe

arxiv:1603.00452 v2 · 2016-03-01 · math.GN · 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{7AZ4DUW7PROAXT55HOCSISZ4KV}

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	2026-05-18T01:18:37.028689Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f833c1d2df7c5c0bcfbd3b85244b3c5575a34163b31eca8f8f9fad02bf6dc579

Aliases

arxiv: 1603.00452 · arxiv_version: 1603.00452v2 · doi: 10.48550/arxiv.1603.00452 · pith_short_12: 7AZ4DUW7PROA · pith_short_16: 7AZ4DUW7PROAXT55 · pith_short_8: 7AZ4DUW7

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/7AZ4DUW7PROAXT55HOCSISZ4KV \
  | 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: f833c1d2df7c5c0bcfbd3b85244b3c5575a34163b31eca8f8f9fad02bf6dc579

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ca1dcac4673d25fbb00cc6ad91917c0691401a36dd739ad6bd9a8ec9ad40dbe",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2016-03-01T20:44:34Z",
    "title_canon_sha256": "8cd4ebee45fa78c23816d496fa78b2d07b47b1afc8661e6ab3a24d7c86a25395"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.00452",
    "kind": "arxiv",
    "version": 2
  }
}