Pith Number

pith:PLGMSVPO

pith:2018:PLGMSVPO5ZB7FAFINVN554C5EC

not attested not anchored not stored refs pending

A negative answer to the problem: are stratifiable spaces $M_1$?

Bosen Wang, Huaipeng Chen

arxiv:1809.03763 v2 · 2018-09-11 · 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{PLGMSVPO5ZB7FAFINVN554C5EC}

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	2026-05-18T00:05:04.427844Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7accc955eeee43f280a86d5bdef05d2091476b75e513fc28488c6cab8d5cef69

Aliases

arxiv: 1809.03763 · arxiv_version: 1809.03763v2 · doi: 10.48550/arxiv.1809.03763 · pith_short_12: PLGMSVPO5ZB7 · pith_short_16: PLGMSVPO5ZB7FAFI · pith_short_8: PLGMSVPO

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/PLGMSVPO5ZB7FAFINVN554C5EC \
  | 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: 7accc955eeee43f280a86d5bdef05d2091476b75e513fc28488c6cab8d5cef69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "963d5f2ee142deabdaa56be946cfa1c25f99ee86ba5747e9b33767a5e923a5eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2018-09-11T09:30:30Z",
    "title_canon_sha256": "5dc763b8613a2c99dfb3179d75d02ba8fd55b6d719cd5af0c6874db296ee89c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03763",
    "kind": "arxiv",
    "version": 2
  }
}