Pith Number

pith:2EFNULPU

pith:2025:2EFNULPUASKGPIBA6OQG4C5QQ2

not attested not anchored not stored refs pending

Computability of Separation Axioms in Countable Second Countable Spaces

Andrew DeLapo, David Gonzalez

arxiv:2507.18564 v1 · 2025-07-24 · math.LO · 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{2EFNULPUASKGPIBA6OQG4C5QQ2}

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	2026-07-05T11:42:50.131139Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d10ada2df4049467a020f3a06e0bb086ade07a006c2f598bea07e81351df2e27

Aliases

arxiv: 2507.18564 · arxiv_version: 2507.18564v1 · doi: 10.48550/arxiv.2507.18564 · pith_short_12: 2EFNULPUASKG · pith_short_16: 2EFNULPUASKGPIBA · pith_short_8: 2EFNULPU

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/2EFNULPUASKGPIBA6OQG4C5QQ2 \
  | 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: d10ada2df4049467a020f3a06e0bb086ade07a006c2f598bea07e81351df2e27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9de4aead90ae943c45a22f2d66f494739a594813e291c39d401c0dc0918e0aab",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2025-07-24T16:38:52Z",
    "title_canon_sha256": "2cb3dc99315cdeabf4d01606f24f4229485fa326f7a5019ee7b1e18c4d85b598"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.18564",
    "kind": "arxiv",
    "version": 1
  }
}