Pith Number

pith:H54QX4IG

pith:2018:H54QX4IGW6L4FO2UOWYPLRHNF6

not attested not anchored not stored refs pending

The first homotopic Baire class of maps with values in ANR's coincides with the first Baire class

Olena Karlova, Sergiy Maksymenko

arxiv:1805.03827 v1 · 2018-05-10 · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H54QX4IGW6L4FO2UOWYPLRHNF6}

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	2026-05-18T00:16:18.652669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f790bf106b797c2bb5475b0f5c4ed2facf784a35ef43b47851f72799bacebfd

Aliases

arxiv: 1805.03827 · arxiv_version: 1805.03827v1 · doi: 10.48550/arxiv.1805.03827 · pith_short_12: H54QX4IGW6L4 · pith_short_16: H54QX4IGW6L4FO2U · pith_short_8: H54QX4IG

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/H54QX4IGW6L4FO2UOWYPLRHNF6 \
  | 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: 3f790bf106b797c2bb5475b0f5c4ed2facf784a35ef43b47851f72799bacebfd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5fcc8abb3063bafbe1168dd38eea126407e2ea4e1b103aeff9d6c1cf98180a4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2018-05-10T05:42:22Z",
    "title_canon_sha256": "fc54cf8c7986237da030808823c1a7bd286c8a0d684710cd60f50ee595cc2eac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03827",
    "kind": "arxiv",
    "version": 1
  }
}