Pith Number

pith:AMR27KQK

pith:2010:AMR27KQKYHUCHLW7JNOGXHJH2O

not attested not anchored not stored refs pending

Hereditarily Hurewicz spaces and Arhangel'skii sheaf amalgamations

Boaz Tsaban, Lyubomyr Zdomskyy

arxiv:1004.0211 v2 · 2010-04-01 · math.GN · math.FA · math.LO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AMR27KQKYHUCHLW7JNOGXHJH2O}

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	2026-05-18T02:43:59.573474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0323afaa0ac1e823aedf4b5c6b9d27d3ada7a1182302385380ed5ab8c2b312d9

Aliases

arxiv: 1004.0211 · arxiv_version: 1004.0211v2 · doi: 10.48550/arxiv.1004.0211 · pith_short_12: AMR27KQKYHUC · pith_short_16: AMR27KQKYHUCHLW7 · pith_short_8: AMR27KQK

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/AMR27KQKYHUCHLW7JNOGXHJH2O \
  | 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: 0323afaa0ac1e823aedf4b5c6b9d27d3ada7a1182302385380ed5ab8c2b312d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2078491b41c84c95949a420fdfbe795bf1f5ac79cdf9e704c79a04edd15b1cce",
    "cross_cats_sorted": [
      "math.FA",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2010-04-01T19:22:21Z",
    "title_canon_sha256": "1cf60b9260f21d519e361d2bdb46d072d62277596a31ee8373ee27602dd33632"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.0211",
    "kind": "arxiv",
    "version": 2
  }
}