Pith Number

pith:ERF235XB

pith:2019:ERF235XBDGBSPDNEVWAVWKYXPD

not attested not anchored not stored refs pending

On the classifying spaces of cobordisms of singular maps

Andr\'as Sz\H{u}cs, Tam\'as Terpai

arxiv:1902.09918 v1 · 2019-02-26 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ERF235XBDGBSPDNEVWAVWKYXPD}

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	2026-05-17T23:52:35.043536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

244badf6e11983278da4ad815b2b1778eb05164f70ad1da35f35ceccdd991ace

Aliases

arxiv: 1902.09918 · arxiv_version: 1902.09918v1 · doi: 10.48550/arxiv.1902.09918 · pith_short_12: ERF235XBDGBS · pith_short_16: ERF235XBDGBSPDNE · pith_short_8: ERF235XB

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/ERF235XBDGBSPDNEVWAVWKYXPD \
  | 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: 244badf6e11983278da4ad815b2b1778eb05164f70ad1da35f35ceccdd991ace

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9704c9d33e5f7f376c51535ec2a5680c1c4e452f95353b3e8271951f160d8ff4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2019-02-26T13:21:26Z",
    "title_canon_sha256": "f0997172f9d7f024b54649e2e30e0f7eb8ea426a58e227bb5953f7a907f27e34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09918",
    "kind": "arxiv",
    "version": 1
  }
}