Pith Number

pith:IEVYX662

pith:2016:IEVYX662EWVGWFCKOB37NDD236

not attested not anchored not stored refs pending

The spaces of non-contractible closed curves in compact space forms

I.A. Taimanov

arxiv:1604.05237 v2 · 2016-04-18 · math.GT · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IEVYX662EWVGWFCKOB37NDD236}

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	2026-05-18T00:27:53.321247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

412b8bfbda25aa6b144a7077f68c7adf95388974f33a8bc990f35d93bcafd0a1

Aliases

arxiv: 1604.05237 · arxiv_version: 1604.05237v2 · doi: 10.48550/arxiv.1604.05237 · pith_short_12: IEVYX662EWVG · pith_short_16: IEVYX662EWVGWFCK · pith_short_8: IEVYX662

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/IEVYX662EWVGWFCKOB37NDD236 \
  | 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: 412b8bfbda25aa6b144a7077f68c7adf95388974f33a8bc990f35d93bcafd0a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3474d4b406ba0850e1a0837fd4954d494b1169096374f0deb9e1d7b39cf959f4",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2016-04-18T16:35:46Z",
    "title_canon_sha256": "f4b6d24f459308b4398f51f37cbe2065cf8812d1e4d9c2d0e84ffa0a00859262"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.05237",
    "kind": "arxiv",
    "version": 2
  }
}