Pith Number

pith:FH7LKZT3

pith:2018:FH7LKZT3N4MEJ6BJ7A6SYRRFH6

not attested not anchored not stored refs pending

Reverse Mathematics of topology: dimension, paracompactness, and splittings

Sam Sanders

arxiv:1808.08785 v3 · 2018-08-27 · 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{FH7LKZT3N4MEJ6BJ7A6SYRRFH6}

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.

Cited by

1 paper in Pith

Lifting countable to uncountable mathematics

Receipt and verification

First computed	2026-07-05T01:06:17.311734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29feb5667b6f1844f829f83d2c46253f98abb3f0ea6df1a15a9ff1c835a0d30c

Aliases

arxiv: 1808.08785 · arxiv_version: 1808.08785v3 · doi: 10.48550/arxiv.1808.08785 · pith_short_12: FH7LKZT3N4ME · pith_short_16: FH7LKZT3N4MEJ6BJ · pith_short_8: FH7LKZT3

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/FH7LKZT3N4MEJ6BJ7A6SYRRFH6 \
  | 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: 29feb5667b6f1844f829f83d2c46253f98abb3f0ea6df1a15a9ff1c835a0d30c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d11479ea7f61372a6bbdaa1b3db453852da40c7203926faa04e199372d1b1b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-08-27T11:17:44Z",
    "title_canon_sha256": "5d1fc064e45f7a093d0941f718485895fe3c7903f481229f6f18be33e6fcce96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.08785",
    "kind": "arxiv",
    "version": 3
  }
}