Pith Number

pith:JME3DEL6

pith:2019:JME3DEL6UDFZL76UUFIMZN3PAE

not attested not anchored not stored refs pending

Free groups, covering spaces and Artin's theorem

Gopala Krishna Srinivasan

arxiv:1904.07689 v4 · 2019-04-13 · math.HO · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JME3DEL6UDFZL76UUFIMZN3PAE}

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	2026-05-17T23:46:17.754840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b09b1917ea0cb95ffd4a150ccb76f012cd2a443500372451ecb6462e608c9d1

Aliases

arxiv: 1904.07689 · arxiv_version: 1904.07689v4 · doi: 10.48550/arxiv.1904.07689 · pith_short_12: JME3DEL6UDFZ · pith_short_16: JME3DEL6UDFZL76U · pith_short_8: JME3DEL6

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/JME3DEL6UDFZL76UUFIMZN3PAE \
  | 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: 4b09b1917ea0cb95ffd4a150ccb76f012cd2a443500372451ecb6462e608c9d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c9ae136ab258769d4e5e94124bd76a9e5c9c31f8e370872ba38f804008fc90a",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2019-04-13T14:48:51Z",
    "title_canon_sha256": "08ddbc4a5de5507ae15e2cb7099b4b73eac7bc847b261236016d71985b023406"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07689",
    "kind": "arxiv",
    "version": 4
  }
}