Pith Number

pith:DBQRLSGB

pith:2014:DBQRLSGBXWC3BTN3MJ327SXAOM

not attested not anchored not stored refs pending

Non-embeddability into a fixed sphere for a family of compact real algebraic hypersurfaces

Ming Xiao, Xiaojun Huang, Xiaoshan Li

arxiv:1405.0778 v1 · 2014-05-05 · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DBQRLSGBXWC3BTN3MJ327SXAOM}

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	2026-05-18T02:52:40.729134Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

186115c8c1bd85b0cdbb6277afcae0733272e214d701237b779b0193e15a741f

Aliases

arxiv: 1405.0778 · arxiv_version: 1405.0778v1 · doi: 10.48550/arxiv.1405.0778 · pith_short_12: DBQRLSGBXWC3 · pith_short_16: DBQRLSGBXWC3BTN3 · pith_short_8: DBQRLSGB

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/DBQRLSGBXWC3BTN3MJ327SXAOM \
  | 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: 186115c8c1bd85b0cdbb6277afcae0733272e214d701237b779b0193e15a741f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d89f26c4659cda8c0e5b1487361876bdbb6400b3344c7750d2542b00db40358e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2014-05-05T04:40:52Z",
    "title_canon_sha256": "38c4b92847ccbf9089772f0892d7a0dd139c5f823645b57b9a615ed53c051735"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.0778",
    "kind": "arxiv",
    "version": 1
  }
}